CN201865597U - Laminated fracturing protection device for continuous oil pipe - Google Patents
Laminated fracturing protection device for continuous oil pipe Download PDFInfo
- Publication number
- CN201865597U CN201865597U CN201020634289XU CN201020634289U CN201865597U CN 201865597 U CN201865597 U CN 201865597U CN 201020634289X U CN201020634289X U CN 201020634289XU CN 201020634289 U CN201020634289 U CN 201020634289U CN 201865597 U CN201865597 U CN 201865597U
- Authority
- CN
- China
- Prior art keywords
- passage
- fracturing
- pressure break
- coiled tubing
- oil
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to the field of oil well production technology of oil field, and particularly relates to a laminated fracturing protection device for a continuous oil pipe. The laminated fracturing protection device comprises a body; the lower end of the body is connected with an oil gas well head; the upper end of the body is connected with an anti-spraying device; an oil pipe passage of the anti-spraying device is arranged at the middle part of the anti-spraying device; a body passage that is internally provided with a wearable protection pipe is arranged in the middle of the body; the upper part of the wearable protection pipe is fixed on the lower part of the anti-spraying device; the upper end and the lower end of the wearable protection pipe are communicated with the oil pipe passage and the oil gas well head of the anti-spraying device respectively; inclined fracturing passages are arranged at two sides of the body; the lower end of the fracturing passage is communicated with the annular part of the body passage outside the wearable protection pipe; and the upper end of the fracturing passage is communicated with a fracturing pipeline by a fracturing pipeline connecting part. The laminated fracturing protection device has the advantages of guaranteeing the connection strength of the ground fracturing pipeline and the well head, and preventing the continuous oil pipe from being damaged under the direct impact of fracturing sands.
Description
Technical field
The utility model belongs to the oil mining technical field in oil field, field, is specifically related to the protective device of coiled tubing separate stratum fracfturing.
Background technology
The separate stratum fracfturing of oil gas well has become the focus of present oil-gas field fracturing operation, coiled tubing separate stratum fracfturing technology is the advanced person's that gets up of newly-developed a novel fracturing technology, be specially adapted to the net horizontal section operation, have time short, operating cost is low, quick advantage such as effective, has vast market prospect.
Under existing wellhead assembly condition; the coiled tubing separate stratum fracfturing is without any the protection facility; during oil gas well separate stratum fracfturing operation; after fracturing sand pressurizes through surface pump; directly impact coiled tubing; but because the coiled tubing internal diameter is little; shortcomings such as frictional resistance is big; being not suitable for fracturing sand directly enters and carries out fracturing work in the coiled tubing; but can only in coiled tubing and casing annulus, inject the high pressure fracturing sand; thereby can impact coiled tubing wall destruction coiled tubing but also just produced fracturing sand; because coiled tubing is normally just made by the soft alloy; this impact can cause huge damage to the body of coiled tubing; the serious life-span that shortens coiled tubing, even can not avoid when fracturing work owing to coiled tubing is thrust the danger that influences construction by fracturing sand.Thereby seriously restricting promoting the use of of this technology.
Because the defective that above-mentioned existing coiled tubing separate stratum fracfturing device exists; the utility model people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge; and the utilization of cooperation scientific principle; actively studied innovation; in the hope of founding a kind of coiled tubing separate stratum fracfturing protective device; can improve general prior art, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
The utility model content
The purpose of this utility model is; overcome the defective that existing coiled tubing separate stratum fracfturing device exists; provide a kind of coiled tubing that can make to avoid direct impact of fracturing sand and impaired coiled tubing separate stratum fracfturing protective device; thereby make coiled tubing separate stratum fracfturing technology be suitable for practicality more, and have the value on the industry.
For realizing above-mentioned utility model purpose, the technical scheme that the utility model proposes is as follows:
A kind of coiled tubing separate stratum fracfturing protective device, comprise body, the lower end of body connects oil and gas wellhead, the upper end of body connects preventer, the middle part of preventer is provided with preventer oil pipe passage, and the middle part of body is provided with body channel, is provided with the wear-resistant protection pipe in the body channel, the bottom of preventer is fixed on the top of wear-resistant protection pipe, and the upper and lower end of wear-resistant protection pipe is connected with preventer oil pipe passage and oil and gas wellhead respectively; Described body both sides are provided with the pressure break passage of inclination, and the lower end of pressure break passage partly communicates with the annular space of the body channel of wear-resistant protection pipe outside, and the upper end of pressure break passage is connected with the pressure break pipeline by pressure break pipeline connector.
The bottom of preventer oil pipe passage is fixed on the top of described wear-resistant protection pipe with thread connecting mode.
The external surface of described wear-resistant protection pipe is welded with carbide alloy.
Slanted angle between described pressure break passage and the body channel is the 30-45 degree.
The lower end of described pressure break pipeline connector is that flange is connected with the upper end of pressure break passage, and the upper end of pressure break pipeline connector is that union is threaded with the pressure break pipeline.
The upper and lower end of described body is connected with oil and gas wellhead with preventer in the flange mode respectively.
Described carbide alloy is the carbide alloy of high rigidity and high-wearing feature.
Compared with prior art, technique scheme of the present utility model has following tangible advantage and beneficial effect at least:
1, utility model has adopted appearance to be welded with the wear-resistant protection pipe of high-wearing feature carbide alloy, avoided the coiled tubing body to damage because of directly impacted by the high pressure fracturing sand, not only prolonged the application life of coiled tubing greatly, also effectively avoided because of coiled tubing is thrust the danger that influences construction by fracturing sand, thereby guaranteed the progress and the safety of constructing;
2, choose the angle that is communicated with of suitable pressure break passage with wear-resistant protection pipe, avoided the wear-resistant protection pipe in fracturing work, to be subjected to impacting and damaging from the fracturing sand in the pressure break pipeline, improved the effective life of wear-resistant protection pipe, helped reducing cost, enhanced productivity; Simultaneously, guaranteed that again fracturing sand is unaffected toward the speed of down-hole impact.
3, each parts connected mode of utility model body all adopts flange to connect, guaranteed the bonding strength of device body well, adopt union to connect with being connected of pressure break pipeline, not only the pressure break pipeline connects fast, and has guaranteed that well head pressure break pipeline attachment security is reliable;
In sum; because in the coiled tubing separate stratum fracfturing technical matters; the high sand ratio fracturing sand impacts fast by ground fracturing unit truck group high pressure and enters in coiled tubing and the casing annulus; very easily damage the body of coiled tubing; in order to protect the coiled tubing outer surface of tube body not washed out by sharp fracturing sand; the utility model has adopted coiled tubing separate stratum fracfturing protective device; in the coiled tubing fracturing work; the utility model can guarantee the intensity that ground pressure break pipeline is connected with well head; can protect coiled tubing not to be subjected to the direct impact of fracturing sand again and damage; thereby have above-mentioned many advantages and practical value; and in like product, do not see have similar structure design to publish or use and really genus innovation; no matter it structurally or bigger improvement all arranged on the function; have large improvement technically; and produced handy and practical effect; and the multinomial effect that enhancement is arranged than prior art; thereby be suitable for practicality more; and have the extensive value of industry, really be a novelty; progressive; practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of manual, with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the structural representation of the utility model coiled tubing separate stratum fracfturing protective device.
Among the figure, 1-body, 11-body channel, 12-annular space part, 2-preventer, 21-preventer oil pipe passage, 3-pressure break pipeline connector, 31-pressure break passage, 4-wear-resistant protection pipe.
The specific embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the specific embodiment of the present utility model, structure, feature and effect thereof, describe in detail as after.
With reference to shown in Figure 1, the coiled tubing separate stratum fracfturing protective device of the utility model preferred embodiment, it mainly comprises: body 1, the lower end of body 1 connects oil and gas wellhead, the upper end of body 1 connects preventer 2, the middle part of preventer 2 is provided with preventer oil pipe passage 21, the middle part of body 1 is provided with body channel 11, be provided with wear-resistant protection pipe 4 in the body channel 11, the bottom of preventer 1 is fixed on the top of wear-resistant protection pipe 4, and the upper and lower end of wear-resistant protection pipe 4 is connected with preventer oil pipe passage 21 and oil and gas wellhead respectively; Body 1 both sides are provided with the pressure break passage 31 of inclination, and the lower end of pressure break passage 31 communicates with the annular space part 12 of the body channel of wear-resistant protection pipe outside, and the upper end of pressure break passage 31 is connected with the pressure break pipeline by pressure break pipeline connector 3.
As preferably, the bottom of preventer oil pipe passage is fixed on the top of wear-resistant protection pipe 4 with thread connecting mode.Concrete, wear-resistant protection pipe 4 upper ends are processed with the external upset tubing male thread, are processed with the external upset tubing box thread in preventer oil pipe passage 21 lower ends to hang wear-resistant protection pipe 4.
The external surface of wear-resistant protection pipe 4 is welded with carbide alloy, and as preferably, being subject to of the external surface of wear-resistant protection pipe 4 impacted part and be welded with carbide alloy, and carbide alloy is preferably the carbide alloy of high rigidity and high-wearing feature.The material and the technology of the preferred carbide alloy of the utility model wear-resistant protection pipe are: appearance built-up welding 625 alloys, layer are greater than 2.5 millimeters, and hardness is greater than Luo Shi 46 degree; Or the Ni-based powder of surfacing (Ni60 or Ni45), layer is greater than 0.8 millimeter, and hardness is greater than Luo Shi 48 degree.The length of wear-resistant protection pipe 4 is advisable with one meter, is preferably 800-900mm.
Carbide alloy that the utility model uses also can be selected the general-purpose industrial carbide alloy for use.Usually, carbide alloy by as the refractory carbide of major components with work the agglomerated material that the metal that coheres effect is mutually formed, have high strength and high-wearing feature.A kind of alloy material of making by powder metallurgical technique by the hard compounds and the binding metal of refractory metal.Carbide alloy has a series of premium properties, particularly its high rigidity and abrasion resistance such as hardness height, wear-resisting, intensity and toughness is better, heat-resisting, corrosion-resistant, even also remain unchanged substantially under 500 ℃ temperature, still has very high hardness in the time of 1000 ℃.
Carbide alloy is to be main component with the carbide of high rigidity refractory metal (WC, TiC) micron powder, is cementing agent with cobalt (Co) or nickel (Ni), molybdenum (Mo), the sintered metal product that sintering forms in vacuum drying oven or hydrogen reducing furnace.Its main kind has:
1, W-Co kind carbide alloy: main component is tungsten carbide (WC) and cementing agent cobalt (Co).Its trade mark is made up of " YG " (" hard, cobalt " two word Chinese phonetic alphabet prefixes) and the percentage that on average contains the cobalt amount.For example, YG8 represents average WCo=8%, and all the other are the W-Co kind carbide alloy of tungsten carbide.
2, kennametal: main component is tungsten carbide, titanium carbide (TiC) and cobalt.Its trade mark is made up of " YT " (" hard, titanium " two word Chinese phonetic alphabet prefixes) and titanium carbide average content.For example, YT15 represents average WTi=15%, and all the other are the kennametal of tungsten carbide and cobalt content.
3, tungsten titanium tantalum (niobium) series hard alloy: main component is tungsten carbide, titanium carbide, ramet (or niobium carbide) and cobalt.This series hard alloy claims general carbide alloy or omnipotent carbide alloy again.
Slanted angle between pressure break passage 31 and the body channel 11 is the 30-45 degree, wherein, is preferably 30 degree, 35 degree, 40 degree and 45 degree.
The lower end of pressure break pipeline connector 3 is that flange is connected with the upper end of pressure break passage 31, and the upper end of pressure break pipeline connector 3 is that union is threaded with the pressure break pipeline.
The upper and lower end of body 1 is connected with oil and gas wellhead with preventer 2 in the flange mode respectively.
The concrete technological process of coiled tubing separate stratum fracfturing technology is:
1, is lowered to coiled tubing to pre-fractured layer;
2, in coiled tubing, pump into low sand,, break through sleeve pipe through forming the high-pressure spray body behind the shower nozzle than load fluid;
3, in coiled tubing, pump into displacement fluid, replaced low sand than load fluid after on carry coiled tubing to second fractured layer;
4, by ground fracturing unit truck group, in the oil jacket annular space, pump into high pressure high sand ratio fracturing sand, carry out the pressure break stratum operation;
5, inject displacement fluid by coiled tubing, replace operation, the part fracturing sand in the oil jacket annular space is replaced out pit shaft, the part fracturing sand is stayed and is done the bridging plug use in the pit shaft;
6, coiled tubing is visited sand face position, pressure testing; If sand face position is higher than the pre-fractured layer of the second layer, the coiled tubing sand washing is to pre-fractured layer, perforation.Finish a pressure break circulation.
7, second pressure break circulation of beginning.
The using method of the utility model coiled tubing separate stratum fracfturing protective device is easy, directly installs additional to get final product on original field devices basis, and concrete steps are:
1, closing well and remove the part production tree after, the lower end of the utility model body 1 and seat to well head, are carried out flange and connect;
2, wear-resistant protection pipe 4 is connected on the preventer 2 of upper end of body 1;
3, flange being carried out with the lower end of preventer 2 in body 1 upper end is connected;
4, the supporting preventer seat of coiled tubing is connected with preventer;
5, connect the pressure break pipeline to the pressure break passage 31 of body 1 both sides;
6, can carry out fracturing work after the pressure testing.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made the equivalent embodiment of a little change for equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (7)
1. coiled tubing separate stratum fracfturing protective device, it is characterized in that: comprise body, the lower end of body connects oil and gas wellhead, the upper end of body connects preventer, the middle part of preventer is provided with preventer oil pipe passage, and the middle part of body is provided with body channel, is provided with the wear-resistant protection pipe in the body channel, the bottom of preventer is fixed on the top of wear-resistant protection pipe, and the upper and lower end of wear-resistant protection pipe is connected with preventer oil pipe passage and oil and gas wellhead respectively; Described body both sides are provided with the pressure break passage of inclination, and the lower end of pressure break passage partly communicates with the annular space of the body channel of wear-resistant protection pipe outside, and the upper end of pressure break passage is connected with the pressure break pipeline by pressure break pipeline connector.
2. coiled tubing separate stratum fracfturing protective device according to claim 1 is characterized in that the bottom of preventer oil pipe passage is fixed on the top of described wear-resistant protection pipe with thread connecting mode.
3. coiled tubing separate stratum fracfturing protective device according to claim 1 is characterized in that the external surface of described wear-resistant protection pipe is welded with carbide alloy.
4. coiled tubing separate stratum fracfturing protective device according to claim 1 is characterized in that the slanted angle between described pressure break passage and the body channel is the 30-45 degree.
5. coiled tubing separate stratum fracfturing protective device according to claim 1 is characterized in that, the lower end of described pressure break pipeline connector is that flange is connected with the upper end of pressure break passage, and the upper end of pressure break pipeline connector is that union is threaded with the pressure break pipeline.
6. coiled tubing separate stratum fracfturing protective device according to claim 1 is characterized in that the upper and lower end of described body is connected with oil and gas wellhead with preventer in the flange mode respectively.
7. coiled tubing separate stratum fracfturing protective device according to claim 3 is characterized in that described carbide alloy is the carbide alloy of high rigidity and high-wearing feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020634289XU CN201865597U (en) | 2010-11-30 | 2010-11-30 | Laminated fracturing protection device for continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020634289XU CN201865597U (en) | 2010-11-30 | 2010-11-30 | Laminated fracturing protection device for continuous oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865597U true CN201865597U (en) | 2011-06-15 |
Family
ID=44136754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020634289XU Expired - Fee Related CN201865597U (en) | 2010-11-30 | 2010-11-30 | Laminated fracturing protection device for continuous oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865597U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041970A (en) * | 2010-11-30 | 2011-05-04 | 安东石油技术（集团）有限公司 | Protection device for separate stratum fracturing of continuous oil pipe |
| CN104520526A (en) * | 2012-10-10 | 2015-04-15 | 卡梅伦国际有限公司 | Horizontal fracturing tree |
| CN109653701A (en) * | 2019-02-28 | 2019-04-19 | 江苏雄越石油机械设备制造有限公司 | A kind of bull fracture well head with filter efficacy |
| US10385643B2 (en) | 2011-09-23 | 2019-08-20 | Cameron International Corporation | Fracturing manifold systems and methods |
| US10385644B2 (en) | 2011-08-05 | 2019-08-20 | Camron International Corporation | Fracturing trees with horizontally offset connections |
-
2010
- 2010-11-30 CN CN201020634289XU patent/CN201865597U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041970A (en) * | 2010-11-30 | 2011-05-04 | 安东石油技术（集团）有限公司 | Protection device for separate stratum fracturing of continuous oil pipe |
| US10385644B2 (en) | 2011-08-05 | 2019-08-20 | Camron International Corporation | Fracturing trees with horizontally offset connections |
| US10428614B2 (en) | 2011-08-05 | 2019-10-01 | Cameron International Corporation | Horizontal fracturing tree |
| US10538987B2 (en) | 2011-08-05 | 2020-01-21 | Cameron International Corporation | Horizontal fracturing tree |
| US10711556B1 (en) | 2011-08-05 | 2020-07-14 | Cameron International Corporation | Fracturing trees with horizontally offset connections |
| US12044092B2 (en) | 2011-08-05 | 2024-07-23 | Cameron International Corporation | Fracturing tree with valves and bore junction in shared body |
| US10385643B2 (en) | 2011-09-23 | 2019-08-20 | Cameron International Corporation | Fracturing manifold systems and methods |
| CN104520526A (en) * | 2012-10-10 | 2015-04-15 | 卡梅伦国际有限公司 | Horizontal fracturing tree |
| CN109653701A (en) * | 2019-02-28 | 2019-04-19 | 江苏雄越石油机械设备制造有限公司 | A kind of bull fracture well head with filter efficacy |
| CN109653701B (en) * | 2019-02-28 | 2021-09-10 | 江苏雄越石油机械设备制造有限公司 | Multi-head fracturing wellhead with filtering effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201865597U (en) | Laminated fracturing protection device for continuous oil pipe | |
| CN201802376U (en) | Open hole well completion hydraulic sand blasting immovable pipe string staged fracturing pipe string | |
| US8945720B2 (en) | Hard composite with deformable constituent and method of applying to earth-engaging tool | |
| CN102777162B (en) | Horizontal well directional fracturing device | |
| CN106593389A (en) | Fracturing method for realizing high-angle natural fracture oil reservoir by adopting permanent plugging agent | |
| CN102454381B (en) | Oil-gas reservoir barefoot well cementing and completion method and device | |
| CN202690026U (en) | Sliding sleeve throttling sand blower | |
| CN102041970B (en) | Protection device for separate stratum fracturing of continuous oil pipe | |
| CN102102503A (en) | Sand prevention method for four-inch small hole | |
| CN107740679A (en) | A kind of coiled tubing drilling combination sealing drill bit | |
| CN107620571B (en) | A kind of casing failure well reparation long-life composite drill bit | |
| CN202900051U (en) | Double-layer casing window-opening drill bit | |
| CN205977189U (en) | Sand screen sand control integration tubular column | |
| CN206205870U (en) | A kind of fluid erosion prevention petroleum pipeline deferent pipe nipple component | |
| CN102943628B (en) | Double-layered casing windowing drillbit | |
| CN205445572U (en) | Archimedes double-helix diverter | |
| CN2846717Y (en) | Workover finding and reaming angle top grind shoe | |
| CN204960850U (en) | Flat-bottom grinding shoe for drilling and grinding continuous oil pipe | |
| CN106917599A (en) | A kind of degradable cementing plug and fraclional well cementing device and method | |
| CN204386577U (en) | The protective jacket in sliding sleeve fracturing hole and sliding sleeve | |
| CN110617057A (en) | Full-pipe type underground testing pipe column and testing method thereof | |
| CN201416429Y (en) | Sand blasting choke with sliding sleeve | |
| CN203161199U (en) | Hydraulic spray gun for hydraulic spray fracturing | |
| CN201593406U (en) | Sand jet perforator structure for improving use life | |
| CN204436351U (en) | Aluminium alloys cutting seam sieve tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Anton Oil & Gas Engineering Technology Services Co., Ltd. Assignor: Anton Oilfield Services (Group) Ltd. Contract record no.: 2011990001090 Denomination of utility model: Protection device for separate stratum fracturing of continuous oil pipe Granted publication date: 20110615 License type: Exclusive License Record date: 20111213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20151130 |
|
| EXPY | Termination of patent right or utility model |