CN202047750U - High-feasibility whipstock - Google Patents
High-feasibility whipstock Download PDFInfo
- Publication number
- CN202047750U CN202047750U CN2011201530384U CN201120153038U CN202047750U CN 202047750 U CN202047750 U CN 202047750U CN 2011201530384 U CN2011201530384 U CN 2011201530384U CN 201120153038 U CN201120153038 U CN 201120153038U CN 202047750 U CN202047750 U CN 202047750U
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- pipe
- circulating
- inclined tube
- whipstock
- screw
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Abstract
The utility model relates to the technical field of whipstocks used in well drilling of branch wells or window-opening side drilling of old wells in oil exploitation, in particular to a high-feasibility whipstock. The high-feasibility whipstock comprises a slant pipe, a feed pipe, a cutting screw and a circulating joint, a slant pipe cavity is arranged in the slant pipe, the upper end face of the slant pipe is a guide slant plane, the feed pipe includes a feed joint on the upper portion thereof and a connecting pipe on the lower portion thereof, the lower portion of the connecting pipe inserted into the slant pipe cavity is fixedly connected with the slant pipe through the cutting screw, an inner cavity of the connecting pipe is communicated with the slant pipe cavity, the circulating joint is fixedly mounted on the lower portion of the slant pipe, and a circulating joint cavity communicated with the slant pipe cavity is arranged inside the circulating joint. The high-feasibility whipstock is reasonable and compact in structure and convenient in use, and has the advantages of low cost, simplicity in manufacturing and use, safety and reliability, labor-saving operation, convenience and high efficiency, and the slant pipe and the feed pipe can be fixedly connected by the aid of the cutting screw and separated by lifting the feed pipe through a drill rod.
Description
Technical field
The utility model relates to the whipstock technical field that branch hole drilling in the oil exploitation or old well window sidetracking use, and is a kind of high feasibility whipstock.
Background technology
In branch hole drilling or old well window sidetracking work progress, often need to be lowered to one and specially lead oblique instrument so that drill bit creeps into by planned course, whipstock is one of common tool of Multilateral Wells and old well window sidetracking, and conventional whipstock often complex structure, reliability are low.
Summary of the invention
The utility model provides a kind of high feasibility whipstock, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the low problem of complex structure, reliability that existing whipstock exists.
The technical solution of the utility model realizes by following measure: a kind of high feasibility whipstock comprises oblique pipe, sends into pipe, shear screw and circulating connection; There is the inclined tube chamber inside of oblique pipe, the upper surface of oblique pipe is a guiding surface, send into the tube connector of sending into joint and bottom that pipe comprises top, the tube connector bottom is sleeved on inside, inclined tube chamber and is fixed together by shear screw and oblique pipe, the inner chamber of tube connector is connected with the inclined tube chamber, the bottom of oblique pipe is installed with circulating connection, there is the circulation head cavity that is connected with the inclined tube chamber inside of circulating connection, and the communication loop head cavity that is no less than one and the radial circulation hole of circulating connection outside are arranged in the circulating connection body.
Be further optimization and/or improvements below to above-mentioned utility model technical scheme:
The outside of above-mentioned oblique pipe can have and is no less than a radially screw, the corresponding radially position restraining position ring block groove of screw in the outside, bottom of tube connector, the outer end of shear screw is fixedly mounted on radially screw inside, and the inner of shear screw is pressed on the groove bottom of limited ring groove; But restraining position ring block platform on the inwall in inclined tube chamber, the lower surface of tube connector is sitting on the upper surface of limited ring dais.
The externally threaded hydraulic circulating head axle journal of the hydraulic circulating head of having can be arranged at the top of above-mentioned circulating connection, the inclined tube internal thread that matches with the hydraulic circulating head external screw thread is arranged on the lower inner wall in inclined tube chamber, circulating connection is fixedly mounted on bottom, inclined tube chamber by hydraulic circulating head external screw thread and inclined tube internal thread, there is the hydraulic circulating head groove in the outside, middle part of circulating connection, and the outer end in radial circulation hole is positioned on the groove bottom of hydraulic circulating head groove.
Can there be seal groove in the outside, bottom of above-mentioned tube connector, and seal groove inside is equipped with and can makes the sealing ring that keeps sealing between the tube connector outside and the inclined tube cavity wall.
The angle of above-mentioned guiding surface and oblique tubular axis line can be three degree.
The quantity of above-mentioned radially screw can be three and be evenly distributed.
The quantity in above-mentioned radial circulation hole can be three and be evenly distributed.
A connecting thread can be sent in the above-mentioned internal chamber wall top of sending into joint.
The utility model reasonable and compact in structure, easy to use, it makes it separate with oblique pipe by the fixedly connected oblique pipe of shear screw and send into pipe by submitting on the drilling rod into pipe, has the advantages that cost is low, be easy to make use, safe and reliable, rapid operation, simple and effective.
Description of drawings
Accompanying drawing 1 is looked the sectional structure schematic diagram for the master of the utility model most preferred embodiment.
Accompanying drawing 2 is analysed and observe the structure for amplifying schematic diagram for A-A place in the accompanying drawing 1.
Coding in the accompanying drawing is respectively: 1 is oblique pipe, and 2 is shear screw, and 3 is circulating connection, 4 is the inclined tube chamber, and 5 is guiding surface, and 6 for sending into joint, 7 is tube connector, and 8 are the circulation head cavity, and 9 is the radial circulation hole, 10 are screw radially, and 11 is limited ring groove, and 12 is limited ring dais, 13 is the hydraulic circulating head axle journal, 14 is the hydraulic circulating head groove, and 15 is seal groove, and 16 for sending into a connecting thread.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts all is that the Butut mode according to Figure of description is described, as: upper and lower, about etc. the position relation be what to determine according to the Butut direction of Figure of description.
Below in conjunction with most preferred embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, this high feasibility whipstock comprise oblique pipe 1, send into pipe, shear screw 2 and circulating connection 3; There is inclined tube chamber 4 inside of oblique pipe 1, the upper surface of oblique pipe 1 is a guiding surface 5, send into the tube connector of sending into joint 6 and bottom 7 that pipe comprises top, tube connector 7 bottoms are sleeved on 4 inside, inclined tube chamber and are fixed together by shear screw 2 and oblique pipe 1, the inner chamber of tube connector 7 is connected with inclined tube chamber 4, the bottom of oblique pipe 1 is installed with circulating connection 3, there is the circulation head cavity 8 that is connected with inclined tube chamber 4 inside of circulating connection 3, and the radial circulation hole 9 of the communication loop head cavity 8 that is no less than one and circulating connection 3 outsides is arranged in circulating connection 3 bodies.By the fixedly connected oblique pipe of shear screw with send into pipe, make itself and oblique pipe realize reliable separation by submitting on the drilling rod into pipe, not only simple in structure, be easy to manufacturing, and also easy and simple to handle.
Can according to actual needs above-mentioned high feasibility whipstock be made further optimization and/or improvements:
As shown in Figure 1, the outside of oblique pipe 1 has and is no less than a radially screw 10, the corresponding radially position restraining position ring block groove 11 of screw 10 in the outside, bottom of tube connector 7, the outer end of shear screw 2 is fixedly mounted on radially screw 10 inside, and the inner of shear screw 2 is pressed on the groove bottom of limited ring groove 11; Restraining position ring block platform 12 on the inwall in inclined tube chamber 4, the lower surface of tube connector 7 is sitting on the upper surface of limited ring dais 12.Can realize the accurate location of tube connector 7 by limited ring dais 12.
As shown in Figure 1, the externally threaded hydraulic circulating head axle journal 13 of the hydraulic circulating head of having is arranged at the top of circulating connection 3, the inclined tube internal thread that matches with the hydraulic circulating head external screw thread is arranged on the lower inner wall in inclined tube chamber 4, circulating connection 3 is fixedly mounted on 4 bottoms, inclined tube chamber by hydraulic circulating head external screw thread and inclined tube internal thread, there is hydraulic circulating head groove 14 in the outside, middle part of circulating connection 3, and the outer end in radial circulation hole 9 is positioned on the groove bottom of hydraulic circulating head groove 14.Hydraulic circulating head groove 14 can guarantee that 9 outer ends, radial circulation hole can not stop up.
As shown in Figure 1, there are seal groove 15, seal groove 15 inside to be equipped with outside the bottom of tube connector 7 and can make the sealing ring that keeps sealing between tube connector 7 outsides and inclined tube chamber 4 inwalls.Sealing rings in the seal groove 15 can guarantee the reliability that seals.
As shown in Figure 1, guiding surface 5 is three degree with the angle of oblique pipe 1 axis.
As shown in Figure 1, radially the quantity of screw 10 is three and is evenly distributed.
Shown in accompanying drawing 1,2, the quantity in radial circulation hole 9 is three and is evenly distributed.
As shown in Figure 1, a connecting thread 16 is sent on the internal chamber wall top of sending into joint 6.
Above technical characterictic has constituted most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The course of work of the utility model most preferred embodiment is: at first, after the utility model assembling finished, be connected the utility model on the drilling rod and be lowered to well by the connecting thread of sending on joint 6 internal chamber walls 16 of sending into, and cooperate pertinent instruments to realize the positioning and directing of guiding surface 5 to the precalculated position; Secondly, pump into cement paste according to amount of calculation toward the shaft bottom, cement paste by by drilling rod successively through sending into joint 6 inner chambers, tube connector 7 inner chambers, inclined tube chamber 4 and circulation head cavity 8, enter annular space between oblique pipe 1 and the pit shaft by radial circulation hole 9, highly be lower than guiding surface 5 lower ends, Hou Ning; Then, on carry drilling rod, drilling rod drives to move on the tube connectors 7 and cuts off shear screw 2 by sending into joint 6, carries drilling rod in the continuation and takes out fully until tube connector 7; At last, be lowered to the sidetracking tubing string and can carry out the bottom construction operation.
Claims (10)
1. one kind high feasibility whipstock is characterized in that comprising oblique pipe, sends into pipe, shear screw and circulating connection; There is the inclined tube chamber inside of oblique pipe, the upper surface of oblique pipe is a guiding surface, send into the tube connector of sending into joint and bottom that pipe comprises top, the tube connector bottom is sleeved on inside, inclined tube chamber and is fixed together by shear screw and oblique pipe, the inner chamber of tube connector is connected with the inclined tube chamber, the bottom of oblique pipe is installed with circulating connection, there is the circulation head cavity that is connected with the inclined tube chamber inside of circulating connection, and the communication loop head cavity that is no less than one and the radial circulation hole of circulating connection outside are arranged in the circulating connection body.
2. high feasibility whipstock according to claim 1, the outside that it is characterized in that oblique pipe has and is no less than a radially screw, the corresponding radially position restraining position ring block groove of screw in the outside, bottom of tube connector, the outer end of shear screw is fixedly mounted on radially screw inside, and the inner of shear screw is pressed on the groove bottom of limited ring groove; Restraining position ring block platform on the inwall in inclined tube chamber, the lower surface of tube connector is sitting on the upper surface of limited ring dais.
3. high feasibility whipstock according to claim 1 and 2, the externally threaded hydraulic circulating head axle journal of the hydraulic circulating head of having is arranged at the top that it is characterized in that circulating connection, the inclined tube internal thread that matches with the hydraulic circulating head external screw thread is arranged on the lower inner wall in inclined tube chamber, circulating connection is fixedly mounted on bottom, inclined tube chamber by hydraulic circulating head external screw thread and inclined tube internal thread, there is the hydraulic circulating head groove in the outside, middle part of circulating connection, and the outer end in radial circulation hole is positioned on the groove bottom of hydraulic circulating head groove.
4. high feasibility whipstock according to claim 1 and 2, the bottom outside that it is characterized in that tube connector have seal groove, seal groove inside to be equipped with can to make and keep the sealing ring that seals between the tube connector outside and the inclined tube cavity wall.
5. high feasibility whipstock according to claim 3, the bottom outside that it is characterized in that tube connector have seal groove, seal groove inside to be equipped with can to make and keep the sealing ring that seals between the tube connector outside and the inclined tube cavity wall.
6. high feasibility whipstock according to claim 4, the angle that it is characterized in that guiding surface and oblique tubular axis line is three degree.
7. high feasibility whipstock according to claim 5, the angle that it is characterized in that guiding surface and oblique tubular axis line is three degree.
8. high feasibility whipstock according to claim 7 is characterized in that radially the quantity of screw is three and is evenly distributed.
9. high feasibility whipstock according to claim 8, the quantity that it is characterized in that the radial circulation hole is three and is evenly distributed.
10. high feasibility whipstock according to claim 9 is characterized in that the internal chamber wall top of sending into joint sends into a connecting thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201530384U CN202047750U (en) | 2011-05-15 | 2011-05-15 | High-feasibility whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201530384U CN202047750U (en) | 2011-05-15 | 2011-05-15 | High-feasibility whipstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047750U true CN202047750U (en) | 2011-11-23 |
Family
ID=44988061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201530384U Expired - Fee Related CN202047750U (en) | 2011-05-15 | 2011-05-15 | High-feasibility whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047750U (en) |
-
2011
- 2011-05-15 CN CN2011201530384U patent/CN202047750U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20160515 |