CA2214325A1 - Positive wet/dry wireline connect - Google Patents
Positive wet/dry wireline connect Download PDFInfo
- Publication number
- CA2214325A1 CA2214325A1 CA002214325A CA2214325A CA2214325A1 CA 2214325 A1 CA2214325 A1 CA 2214325A1 CA 002214325 A CA002214325 A CA 002214325A CA 2214325 A CA2214325 A CA 2214325A CA 2214325 A1 CA2214325 A1 CA 2214325A1
- Authority
- CA
- Canada
- Prior art keywords
- male
- connection
- wireline
- female
- connector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000615 nonconductor Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/028—Electrical or electro-magnetic connections
- E21B17/0285—Electrical or electro-magnetic connections characterised by electrically insulating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
In the oil industry, several types of survey tools are used to track the down hole locations of drilled wells and to track the location of a well that is being drilled in a direction other than straight vertical. Many of the survey tools used require a wireline to be attached for the survey signal to be sent back to the surface and also for the retrieval of the downhole survey tools.
During drilling operations it is important to have the survey tools as close to the drilling bit as possible to establish where the bit is actually drilling. During drilling operations a new length of drill pipe must be added approximately every ten meters. This requires the wireline that is inside the drill pipe to be pulled to surface out of the way for the connection or addition of the new pipe. In recent years people have developed a system to break the wire in the drill pipe and establish a "Wet Connection" so you would not have to pull all the wireline out of the pipe and could leave the survey equipment down near the bit. All you would have to do is have your wire make connection to the wire that is in the pipe near the surface and use the fluid for the ground of the wire to establish a signal. Placing a splice in the wireline and mounting a male connector to the top of the wireline that will be left in the pipe allows the survey tools closer connection to the surface. A female end is then attached to the wireline to go over the male end to make the connection. By doing this you speed up your connections because you are not pulling the full length of the wireline each ten meters. This system works well when using a fluid that has a high level of conductivity like water, however many of the wells drilled now use specialized fluids that are not nearly as conductive. There is also a need sometimes to be connected in a gasified fluid that offers no conductivity for your ground. This system also occasionally is difficult to actually make the connection because the wetconnect is a small male pin pointing up and a female end that drops over often during drilling is pumped off because of the hydraulic pressure created. When the drill pipe is being rotated it loses the connection almost every time as well.
This makes this type of connection unreliable for the data to be transferred up to surface. Serious problems can arise as a result of poor or faulty data being transmitted to the surface. Poor data has caused wells to be drilled in the wrong direction missing the entire area of interest.
The need for a connection that would be reliable in fluids, gasified fluids and in pure gases has become extremely important. The technical knowledge disclosed within this application relates to a mechanical device that is designed to make a positive wireline connection in a fluid. gasified fluid or in a pure gas environment and is able to rotate with the drill pipe.
During drilling operations it is important to have the survey tools as close to the drilling bit as possible to establish where the bit is actually drilling. During drilling operations a new length of drill pipe must be added approximately every ten meters. This requires the wireline that is inside the drill pipe to be pulled to surface out of the way for the connection or addition of the new pipe. In recent years people have developed a system to break the wire in the drill pipe and establish a "Wet Connection" so you would not have to pull all the wireline out of the pipe and could leave the survey equipment down near the bit. All you would have to do is have your wire make connection to the wire that is in the pipe near the surface and use the fluid for the ground of the wire to establish a signal. Placing a splice in the wireline and mounting a male connector to the top of the wireline that will be left in the pipe allows the survey tools closer connection to the surface. A female end is then attached to the wireline to go over the male end to make the connection. By doing this you speed up your connections because you are not pulling the full length of the wireline each ten meters. This system works well when using a fluid that has a high level of conductivity like water, however many of the wells drilled now use specialized fluids that are not nearly as conductive. There is also a need sometimes to be connected in a gasified fluid that offers no conductivity for your ground. This system also occasionally is difficult to actually make the connection because the wetconnect is a small male pin pointing up and a female end that drops over often during drilling is pumped off because of the hydraulic pressure created. When the drill pipe is being rotated it loses the connection almost every time as well.
This makes this type of connection unreliable for the data to be transferred up to surface. Serious problems can arise as a result of poor or faulty data being transmitted to the surface. Poor data has caused wells to be drilled in the wrong direction missing the entire area of interest.
The need for a connection that would be reliable in fluids, gasified fluids and in pure gases has become extremely important. The technical knowledge disclosed within this application relates to a mechanical device that is designed to make a positive wireline connection in a fluid. gasified fluid or in a pure gas environment and is able to rotate with the drill pipe.
Description
CA 0221432~ 1997-10-1 SPECIFICATIONS:
Field of Invention:
This invention relates to situations that occur when drilling operations become hindered by the wet connect becoming not functional because of rotation, being broke off or hydraulicing off, sending data that is unreadable, incorrect or no data at all. Under normal wireline survey operations, the need to connect to and release from the wet connect occurs about every 10 metres, causing excessive wear on the male end of the wet connect. During these conditions, the male pin of the wetconnect often encounters impact at the time the female connector landing on the pin often bending or breaking the pin. This connection is critical since the survey data requires a complete and accurate connection in order for the signal to be transmitted from the near bit location to the surface for inl~ lion. It is equally important that once a connection has been established that the connection will remain connected during drilling operations.
During drilling operations fluid is pumped down the drill pipe at pressures between 7,500 and 11,000 kPa this often causes the female end of the wet connect to hydraulic off or float away CA 0221432~ 1997-10-1~
The novelty and ingenuity of this invention is the ability to build the male connector having an elongated pin member extending along the longitudinal axis having a said diameter of no less than l.OOcm and extending longitudinally at a length of no greater than 15cm. The said connector to have electrical contacts arranged at intervals along the said pin member and electrical insulators cooperatively arranged on the said pin number isolating the said first electrical contacts from the said pin member and one another. Having a larger male connecting pin allows for the repeated impact from the female connector without causing the said male connector to bend or break off becoming dysfunctional.
By having a male connector with an elongated pin member extending along the longitudinal axis having a said diameter of no less than l.OOcm and extending longitudinally at a length of no greater than 1 5cm allows for a much greater surface area for contact between the two connectors.
The said male pin extending longitudinally a much greater distance than prior art, allows for the connection to m~int~in contact while experiencing the for mentioned hydraulicing from the fluid medium. In addition the female end of the tubular housing being designed with a mass greater than the maximum hydraulic force created when drilling fluids reach a pressure of 11,000 kPa.
By having a female connector with a tubular housing that extends longitudinally along the same axis as the male connector and placing a spring loaded female receptacle to meet the top of the male connecting pin with a predetermined surface area the connector is able to rotate and maintain conductivity. The spacing between the male connector pin and the female tubular housing being machined to a precise measurement allows for near frictionless rotation while maintaining conductivity through the connection.
CA 0221432~ 1997-10-1~
the male probe and the female counter part. This method prevents the male probe and the said female counter part from forming a hydrau]ic lock, however fails to effectively prevent the said female end from hydraulicing or floating off causing the electrical contact to be broken.
Pottier et al. U.S. Patent 476349 discloses a wet connector with a male probe and a female end that uses seals within the tubular housing of the said female end. The said seal is designed to keep fluids from seeping into the connection. It is desirable or necessary from time to time to rotate drill pipe with the wire line and the said wet connect in a position down hole. The said seal causes sufficient drag to the said female end so as to cause it to rotate with the drill pipe.
This rotation of the said female end is undesirable because it causes the wireline to rotate until it breaks off the electrical connection at a point on the wireline distal from the said wet connector.
The said seal can be destroyed by the friction caused from rotation causing the fluid medium to enter into the said connector creating a short in the electrical circuit.
It is desirable or necessary from time to time to operate a wireline connection in a fluid medium during the first stages of drilling a well then to switch over to a gaseous medium or a mixture of both without the removal of the wet connect. Current technology does not provide method to operate in this manner. The current technology using the fluid medium as the electrical ground return for the said connection.
These obvious limitations make the current wet connect technology ineffective in today's modern drilling environment.
Summary of Invention:
CA 0221432~ 1997-10-1~
from it's male counterpart thus causing the connection to become intermittent. This intermittent connection causes the data to become suspect and unreliable at the surface. In addition it is important to have the ability to rotate the drill pipe and maintain the connection enabling survey information such as hole angle and direction to be transmitted up to the surface. It is desirable or necessary from time to time to connect and /or reconnect the downhole wireline in a gaseous medium or a gaseous/fluid medium.
Description of Prior Art:
Disadvantages of the prior art include failure to effectively construct a pin that will be able to withstand the repeated connections with the female end without breaking off. Another disadvantage of prior art is the failure to efficiently design the female end so as to not hydraulic off during drilling operations. Another disadvantage of prior art is the failure to effectively maintain connection while rotating the drill string. Current technology requires the connector to be operated in a fluid medium so the reverse polarity of the electrical signal may return through the said medium. lt is desirable or necessary from time to time to connect and /or reconnect the downhole wireline in a fluid medium, a gaseous medium or a gaseous/fluid medium.
Carmichael et al. U.S. Pat. No 5,358,418 discloses a wet connector assembly which includes a male probe and a female receiver. The male probe failing to effectively m:~int:~in contact with the female end. In the event the male pin becomes bent or broken off the female connector end would not be able to make the necessary connection causing the data flow to be cut off. .
Wilson et al. U.S. Patent 4174875 discloses a wet connector with a spring operated piston with a male probe and female connector that includes a pressure compensating bladder inside the female connection. The pressure compensating bladder releasing all hydraulic pressure between CA 0221432~ 1997-10-1 DESCIPTION OF DRAWINGS:
Figure 1. Cross-section of Positive WetlDry Wireline Connect Figure 2. Plan view of Positive Wet/Dry Wireline Connect * *NOTE* *
NAMING CONVENTION:
In the context of this application, the following terminolo~ will be employed. To identify parts that correspond to the above drawings, they shall be identified through the following convention. First the drawing number~ presented in Roman Numerals, and then the part referenced on that drawing. For example IIC refers to part C as shown on fi~ure 2.
The concept crucial to this invention is the creation of a male connector with an elongated pin member extending along the longitudinal axis having a said diameter of no less than 1.00cm and extending longitudinally at a length of no greater than 15cm allows for a much greater surface area for contact between the two connectors lA that is machined to a precise thickness based on a host material so as to provide a predetermined amount of strength. Connected to the male connector pin at the top along the longitudinal axis is a male receptacle placed anterior at the top to the said male connector pin extending along the longitudinal axis the said male receptacle being cylindrical along the longitudinal axis the said male receptacle a conical extrusion of equal proportions on the upper end when placed along the longitudinal axis IB which provides a landing point for a female receptacle placed interior to the said female tubular housing in a position extending along the longitudinal axis at the top of the tubular housing below a spring lC. The angle where the said male receptacle and the said female receptacle meet is an important CA 0221432~ 1997-10-1~
parameter so the said male and female receptacles may have as much surface contact as possible 1 D. In addition, a system sealing comprising of a sealing ring in sealing contact with the said male pin and the said female connector. This prevents the drill fluids from entering the electrical receptors in the male and female counter part 2A.
Field of Invention:
This invention relates to situations that occur when drilling operations become hindered by the wet connect becoming not functional because of rotation, being broke off or hydraulicing off, sending data that is unreadable, incorrect or no data at all. Under normal wireline survey operations, the need to connect to and release from the wet connect occurs about every 10 metres, causing excessive wear on the male end of the wet connect. During these conditions, the male pin of the wetconnect often encounters impact at the time the female connector landing on the pin often bending or breaking the pin. This connection is critical since the survey data requires a complete and accurate connection in order for the signal to be transmitted from the near bit location to the surface for inl~ lion. It is equally important that once a connection has been established that the connection will remain connected during drilling operations.
During drilling operations fluid is pumped down the drill pipe at pressures between 7,500 and 11,000 kPa this often causes the female end of the wet connect to hydraulic off or float away CA 0221432~ 1997-10-1~
The novelty and ingenuity of this invention is the ability to build the male connector having an elongated pin member extending along the longitudinal axis having a said diameter of no less than l.OOcm and extending longitudinally at a length of no greater than 15cm. The said connector to have electrical contacts arranged at intervals along the said pin member and electrical insulators cooperatively arranged on the said pin number isolating the said first electrical contacts from the said pin member and one another. Having a larger male connecting pin allows for the repeated impact from the female connector without causing the said male connector to bend or break off becoming dysfunctional.
By having a male connector with an elongated pin member extending along the longitudinal axis having a said diameter of no less than l.OOcm and extending longitudinally at a length of no greater than 1 5cm allows for a much greater surface area for contact between the two connectors.
The said male pin extending longitudinally a much greater distance than prior art, allows for the connection to m~int~in contact while experiencing the for mentioned hydraulicing from the fluid medium. In addition the female end of the tubular housing being designed with a mass greater than the maximum hydraulic force created when drilling fluids reach a pressure of 11,000 kPa.
By having a female connector with a tubular housing that extends longitudinally along the same axis as the male connector and placing a spring loaded female receptacle to meet the top of the male connecting pin with a predetermined surface area the connector is able to rotate and maintain conductivity. The spacing between the male connector pin and the female tubular housing being machined to a precise measurement allows for near frictionless rotation while maintaining conductivity through the connection.
CA 0221432~ 1997-10-1~
the male probe and the female counter part. This method prevents the male probe and the said female counter part from forming a hydrau]ic lock, however fails to effectively prevent the said female end from hydraulicing or floating off causing the electrical contact to be broken.
Pottier et al. U.S. Patent 476349 discloses a wet connector with a male probe and a female end that uses seals within the tubular housing of the said female end. The said seal is designed to keep fluids from seeping into the connection. It is desirable or necessary from time to time to rotate drill pipe with the wire line and the said wet connect in a position down hole. The said seal causes sufficient drag to the said female end so as to cause it to rotate with the drill pipe.
This rotation of the said female end is undesirable because it causes the wireline to rotate until it breaks off the electrical connection at a point on the wireline distal from the said wet connector.
The said seal can be destroyed by the friction caused from rotation causing the fluid medium to enter into the said connector creating a short in the electrical circuit.
It is desirable or necessary from time to time to operate a wireline connection in a fluid medium during the first stages of drilling a well then to switch over to a gaseous medium or a mixture of both without the removal of the wet connect. Current technology does not provide method to operate in this manner. The current technology using the fluid medium as the electrical ground return for the said connection.
These obvious limitations make the current wet connect technology ineffective in today's modern drilling environment.
Summary of Invention:
CA 0221432~ 1997-10-1~
from it's male counterpart thus causing the connection to become intermittent. This intermittent connection causes the data to become suspect and unreliable at the surface. In addition it is important to have the ability to rotate the drill pipe and maintain the connection enabling survey information such as hole angle and direction to be transmitted up to the surface. It is desirable or necessary from time to time to connect and /or reconnect the downhole wireline in a gaseous medium or a gaseous/fluid medium.
Description of Prior Art:
Disadvantages of the prior art include failure to effectively construct a pin that will be able to withstand the repeated connections with the female end without breaking off. Another disadvantage of prior art is the failure to efficiently design the female end so as to not hydraulic off during drilling operations. Another disadvantage of prior art is the failure to effectively maintain connection while rotating the drill string. Current technology requires the connector to be operated in a fluid medium so the reverse polarity of the electrical signal may return through the said medium. lt is desirable or necessary from time to time to connect and /or reconnect the downhole wireline in a fluid medium, a gaseous medium or a gaseous/fluid medium.
Carmichael et al. U.S. Pat. No 5,358,418 discloses a wet connector assembly which includes a male probe and a female receiver. The male probe failing to effectively m:~int:~in contact with the female end. In the event the male pin becomes bent or broken off the female connector end would not be able to make the necessary connection causing the data flow to be cut off. .
Wilson et al. U.S. Patent 4174875 discloses a wet connector with a spring operated piston with a male probe and female connector that includes a pressure compensating bladder inside the female connection. The pressure compensating bladder releasing all hydraulic pressure between CA 0221432~ 1997-10-1 DESCIPTION OF DRAWINGS:
Figure 1. Cross-section of Positive WetlDry Wireline Connect Figure 2. Plan view of Positive Wet/Dry Wireline Connect * *NOTE* *
NAMING CONVENTION:
In the context of this application, the following terminolo~ will be employed. To identify parts that correspond to the above drawings, they shall be identified through the following convention. First the drawing number~ presented in Roman Numerals, and then the part referenced on that drawing. For example IIC refers to part C as shown on fi~ure 2.
The concept crucial to this invention is the creation of a male connector with an elongated pin member extending along the longitudinal axis having a said diameter of no less than 1.00cm and extending longitudinally at a length of no greater than 15cm allows for a much greater surface area for contact between the two connectors lA that is machined to a precise thickness based on a host material so as to provide a predetermined amount of strength. Connected to the male connector pin at the top along the longitudinal axis is a male receptacle placed anterior at the top to the said male connector pin extending along the longitudinal axis the said male receptacle being cylindrical along the longitudinal axis the said male receptacle a conical extrusion of equal proportions on the upper end when placed along the longitudinal axis IB which provides a landing point for a female receptacle placed interior to the said female tubular housing in a position extending along the longitudinal axis at the top of the tubular housing below a spring lC. The angle where the said male receptacle and the said female receptacle meet is an important CA 0221432~ 1997-10-1~
parameter so the said male and female receptacles may have as much surface contact as possible 1 D. In addition, a system sealing comprising of a sealing ring in sealing contact with the said male pin and the said female connector. This prevents the drill fluids from entering the electrical receptors in the male and female counter part 2A.
Claims (3)
1. A connectable and releasable positive wet/dry connect for transmitting electrical current between wirelines inside a drill string comprising:
A male connector having an elongated pin member extending along the longitudinal axis having a said diameter of no less than 1.00cm and extending longitudinally at a length of no greater than 1 5cm;
The said connector to have axially spaced annular electrical contacts arranged at intervals along anterior section of the said pin member and electrical insulators cooperatively arranged on the said pin member isolating the said first electrical contacts from the said pin member and one another;
A female connector with a tubular housing and axially spaced annular electrical contacts arranged at intervals along the interior section of the said tubular housing and electrical insulators cooperatively arranged an the said tubular member isolating the said first electrical contacts from one another;
The male connector releasably receivable within the female connector;
The said axially spaced annular electrical contacts cooperatively arranged so as to make electrical contact within the releasably receivable male and female connectors.
A male connector having an elongated pin member extending along the longitudinal axis having a said diameter of no less than 1.00cm and extending longitudinally at a length of no greater than 1 5cm;
The said connector to have axially spaced annular electrical contacts arranged at intervals along anterior section of the said pin member and electrical insulators cooperatively arranged on the said pin member isolating the said first electrical contacts from the said pin member and one another;
A female connector with a tubular housing and axially spaced annular electrical contacts arranged at intervals along the interior section of the said tubular housing and electrical insulators cooperatively arranged an the said tubular member isolating the said first electrical contacts from one another;
The male connector releasably receivable within the female connector;
The said axially spaced annular electrical contacts cooperatively arranged so as to make electrical contact within the releasably receivable male and female connectors.
2. The Female connector of the Positive Wet/Dry Connect being designed with a mass greater than the maximum hydraulic force created when drilling fluids reach a pressure of 11,000 kPa providing;
A sufficient force using the mass to maintain continuity between the above mentioned male connector and the female connector.
A sealing means comprising of a sealing ring in sealing contact with the said male pin and the said female connector.
A sufficient force using the mass to maintain continuity between the above mentioned male connector and the female connector.
A sealing means comprising of a sealing ring in sealing contact with the said male pin and the said female connector.
3. Primary to Positive Wet/Dry Connect is the design of a ground connection that is actuated by:
A female receptacle placed interior to the said female tubular housing in a position extending along the longitudinal axis at the top of the tubular housing below a spring;
A female receptacle being cylindrical along the longitudinal axis;
Said female receptacle having a conical indent of equal proportions on the lower end when placed along the longitudinal axis;
A male receptacle placed anterior at the top to the said male connector pin extending along the longitudinal axis;
The said male receptacle being cylindrical along the longitudinal axis;
The said male receptacle a conical extrusion of equal proportions on the upper end when placed along the longitudinal axis;
The said male and female receptacle coming together making continuity between the two receptacles allowing a ground to be made through the wire;
The critical nature of this conical angle being 90 degrees.
A female receptacle placed interior to the said female tubular housing in a position extending along the longitudinal axis at the top of the tubular housing below a spring;
A female receptacle being cylindrical along the longitudinal axis;
Said female receptacle having a conical indent of equal proportions on the lower end when placed along the longitudinal axis;
A male receptacle placed anterior at the top to the said male connector pin extending along the longitudinal axis;
The said male receptacle being cylindrical along the longitudinal axis;
The said male receptacle a conical extrusion of equal proportions on the upper end when placed along the longitudinal axis;
The said male and female receptacle coming together making continuity between the two receptacles allowing a ground to be made through the wire;
The critical nature of this conical angle being 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002214325A CA2214325A1 (en) | 1997-10-15 | 1997-10-15 | Positive wet/dry wireline connect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002214325A CA2214325A1 (en) | 1997-10-15 | 1997-10-15 | Positive wet/dry wireline connect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2214325A1 true CA2214325A1 (en) | 1999-04-15 |
Family
ID=4161373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002214325A Abandoned CA2214325A1 (en) | 1997-10-15 | 1997-10-15 | Positive wet/dry wireline connect |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2214325A1 (en) |
-
1997
- 1997-10-15 CA CA002214325A patent/CA2214325A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |