CN202850893U - Double channel drill stem hydraulic power piston pressure adding tool - Google Patents
Double channel drill stem hydraulic power piston pressure adding tool Download PDFInfo
- Publication number
- CN202850893U CN202850893U CN 201220544421 CN201220544421U CN202850893U CN 202850893 U CN202850893 U CN 202850893U CN 201220544421 CN201220544421 CN 201220544421 CN 201220544421 U CN201220544421 U CN 201220544421U CN 202850893 U CN202850893 U CN 202850893U
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- piston body
- drill string
- channel drill
- dual channel
- piston
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Abstract
A double channel drill stem hydraulic power piston pressure adding tool comprises a shaft sleeve. A double channel drill stem is arranged in the shaft sleeve. A drill bit is connected with the lower end of the double channel drill stem. The double channel drill stem comprises a double channel drill stem inner tube and a double channel drill stem outer tube. The double channel drill stem inner tube is located in the double channel drill stem outer tube. A double channel drill stem center channel is arranged in the double channel drill stem inner tube. A double channel drill stem annular hollow channel is located between the double channel drill stem inner tube and the double channel drill stem outer tube. The double channel drill stem hydraulic power piston pressure adding tool is characterized in that a first piston body is connected with the outer side of the double channel drill stem outer tube in a sealed mode. The first piston body is hollow. A second piston body is connected with an inner wall of the shaft sleeve in the sealed mode. The second piston body is located above the first piston body. The first piston body is connected with the second piston body in the sealed mode. A combined body of the first piston body and the second piston body divides space between the inner wall of the shaft sleeve and the double channel drill stem outer tube to a piston upper portion annular hollow portion and a piston lower portion annular hollow portion.
Description
Technical field
The utility model relates to a kind of oil/gas drilling instrument, relates in particular to a kind of dual channel drill string hydraulic piston pressurizing tool.
Background technology
The drilling technology of the advanced complex structural wells such as extended reach well, horizontal well, high angle hole and multilateral well, accelerating oil-gas exploration and development speed, improving reserves and recovery ratio, reduction exploration and development investment and operating cost, prolongation old filed life-span and reducing offshore boring island quantity to have important effect to obtain the aspects such as higher economic benefit, yet because the pressure of the drill is little, limit further developing of above-mentioned well type, serious probing and production efficiency and the benefit that restricts the resources such as lower oil gas that land of this problem always.
The utility model content
The utility model provides a kind of dual channel drill string hydraulic piston pressurizing tool that can arbitrarily regulate as required the pressure of the drill for deficiency.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
A kind of dual channel drill string hydraulic piston pressurizing tool, comprise wellbore casing, be provided with the dual channel drill string in the wellbore casing, dual channel drill string lower end is connected with drill bit, the dual channel drill string comprises dual channel drill string inner tube and dual channel drill string outer tube, dual channel drill string inner tube is positioned at dual channel drill string outer tube, be dual channel drill string central passage in the dual channel drill string inner tube, be dual channel drill string annulus access between dual channel drill string inner tube and the dual channel drill string outer tube, it is characterized in that, the outer airtight first piston body that is connected with of dual channel drill string outer tube, the first piston body is hollow, airtight second piston body that is connected with of wellbore casing inwall, the second piston body is positioned at first piston body top, the first piston body links to each other with the second piston body is airtight, and the assembly of first piston body and the second piston body is piston upper annulus and piston bottom annular space with the spatial separation between wellbore casing inwall and the dual channel drill string outer tube.
Because first piston body and the second piston body can axially move with respect to wellbore casing with the dual channel tubing string in the utility model, therefore can be by the liquid in the piston upper annulus being pressurizeed to control the axially-movable of whole piston assembly, control the pressure of the drill of drill bit with this, the pressure of the drill problem when solving preferably horizontal well drilling, directional well and extended reach well.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In the accompanying drawing:
1, piston bottom annular space; 2, piston upper annulus; 3, dual channel drill string annulus access; 4, dual channel drill string central passage; 5, dual channel drill string inner tube; 6, dual channel drill string outer tube; 7, dual channel drill string; 8, the second piston body; 9, three seals; 10, first sealing; 11, second sealing; 12, first piston body; 13, wellbore casing; 14, the borehole wall; 15, drill bit.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present utility model and feature are described, institute gives an actual example and only is used for explaining the utility model, is not be used to limiting scope of the present utility model.
A kind of dual channel drill string hydraulic piston pressurizing tool, as shown in Figure 1, comprise wellbore casing 13, be provided with dual channel drill string 7 in the wellbore casing 13, dual channel drill string 7 lower ends are connected with drill bit 15, dual channel drill string 7 comprises dual channel drill string inner tube 5 and dual channel drill string outer tube 6, dual channel drill string inner tube 5 is positioned at dual channel drill string outer tube 6, be dual channel drill string central passage 4 in the dual channel drill string inner tube 5, be dual channel drill string annulus access 3 between dual channel drill string inner tube 5 and the dual channel drill string outer tube 6, the dual channel drill string outer tube 6 outer airtight first piston bodies 12 that are connected with, first piston body 12 is hollow, airtight second piston body 8 that is connected with of wellbore casing 13 inwalls, the second piston body 8 is positioned at first piston body 12 tops, first piston body 12 and 8 airtight linking to each other of the second piston body, the assembly of first piston body 12 and the second piston body 8 is piston upper annulus 2 and piston bottom annular space 1 with the spatial separation between wellbore casing 13 inwalls and the dual channel drill string outer tube 6.In the present embodiment, the airtight first that is connected with seals 10 between first piston body 12 and the second piston body 8, the airtight second that is connected with seals the airtight three seals 9 that is connected with between 11, the second piston bodies 8 and wellbore casing 13 inwalls between first piston body 12 and the dual channel drill string outer tube 6.Be the axial static sealing between first piston body 12 and the dual channel drill string outer tube 6; Be axial movable sealing between the second piston body 8 and wellbore casing 13 inwalls; Be circumferential movable sealing between first piston body 12 and the second piston body 8.First sealing 10 is circumferential movable sealing; Second sealing 11 is axial movable sealing; Three seals 9 is axial movable sealing.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
This instrument is comprised of dual channel drill string, piston assembly (comprising first piston body and the second piston body) and sealing device (comprising first sealing, second sealing and three seals), the dual channel drill string provides the up and down going channel of mud, the dual channel drill string divides inside and outside two-layer, comprise dual channel drill string inner tube and dual channel drill string outer tube, outer dual channel drill string outer tube provides the mud down going channel, and internal layer dual channel drill string inner tube provides the mud data feedback channel; Piston assembly is comprised of first piston body and the second piston body, piston assembly is divided into two parts with the annular space between dual channel drill string and well, be piston upper annulus and piston bottom annular space, two piston bodies are axial arranged along the dual channel drill string, first piston body hollow wherein, and be fixed together with dual channel drill string outer wall, the dual channel drill string passes through from first piston body middle part, there is the axial static sealing between the two, the second piston body is installed between first piston body and the wellbore casing, there is circumferential movable sealing between two piston bodies, have axial movable sealing between the second piston body and the wellbore casing, first piston can rotate with respect to the second piston body with the dual channel drill string.The second piston body can be done rotatablely moving of trace, and the first piston body rotatablely moves with respect to the second piston physical efficiency complete cycle.Whole piston assembly namely can be with respect to the axially-movable of dual channel drill string, again can be with the dual channel tubing string with respect to the wellbore casing axially-movable.Its up and down pressure differential between both sides piston upper annulus and the piston bottom annular space is depended in the motion of piston assembly.Whole instrument can be used for finishing the underground work such as drilling well, completion, well workover, well cleaning and mounting sleeve.
In the utility model, first is sealed into circumferential movable sealing, be installed between first piston body and the second piston body, this sealing can guarantee that two piston bodies fluid when doing relative rotary motion can not gang up another piston body from a piston body, can guarantee that again two piston bodies can not gang up mutually doing when moving to axial liquid; Second is sealed into axial movable sealing, be installed between first piston body and the dual channel drill string, this sealing can guarantee the first piston body with respect to the biflow path pipe axis of a cylinder to when motion, the mud in the annular space of piston bottom can not enter the first piston body; Three seals is axial movable sealing, is installed between the second piston body and the wellbore casing, and when this sealing can guarantee that whole piston assembly axially moves with respect to wellbore casing along the dual channel drill string, the piston body up and down mud of both sides can not ganged up mutually.
The utility model is a kind of counterflush drilling technology that is applied to the drilling well field, adopts the hydraulic piston pressurization, makes drill string drill bit in rotation can obtain extra the pressure of the drill.
The utility model has following characteristics when work:
(1) two piston body is lowered in the wellbore casing with the dual channel drill string;
(2) two piston body existing radial displacements on the installation site have again axial displacement;
(3) two piston bodies both can axially move with respect to the dual channel drill string, can axially move downwards with respect to the borehole wall with the latter again;
(4) the first piston body both can rotate with respect to the second piston body with the dual channel drill string, can rotate with respect to the borehole wall with the second piston body again;
(5) the first piston body namely can axially move along the dual channel drill string with respect to the second piston body, can rotate with respect to the second piston body again;
(6) the first sealing is installed between first piston body and the second piston body, fluid can not ganged up another piston body from a piston body in the time of can guaranteeing that two piston bodies relatively rotate, and can guarantee that again both can not gang up mutually at the liquid of doing when moving to axial between two piston bodies;
(7) the second sealing is installed between first piston body and the dual channel drill string, and the mud when guaranteeing the first piston body with respect to the axially-movable of dual channel drill string in the annular space of piston bottom can not enter the first piston body;
(8) three seals are installed between the second piston body and the wellbore casing inwall, and when guaranteeing that whole piston assembly axially moves with respect to the borehole wall along the dual channel drill string, the piston assembly up and down mud of both sides can not ganged up mutually;
(9) by being pressurizeed, the liquid in the piston upper annulus can control the axially-movable of whole piston assembly;
(10) by can the control piston assembly at ground rotation dual channel drill string rotatablely move.
Claims (4)
1. dual channel drill string hydraulic piston pressurizing tool, comprise wellbore casing (13), be provided with dual channel drill string (7) in the wellbore casing (13), dual channel drill string (7) lower end is connected with drill bit (15), dual channel drill string (7) comprises dual channel drill string inner tube (5) and dual channel drill string outer tube (6), dual channel drill string inner tube (5) is positioned at dual channel drill string outer tube (6), be dual channel drill string central passage (4) in the dual channel drill string inner tube (5), be dual channel drill string annulus access (3) between dual channel drill string inner tube (5) and the dual channel drill string outer tube (6), it is characterized in that, the outer airtight first piston body (12) that is connected with of dual channel drill string outer tube (6), first piston body (12) is hollow, airtight the second piston body (8) that is connected with of wellbore casing (13) inwall, the second piston body (8) is positioned at first piston body (12) top, first piston body (12) and airtight linking to each other of the second piston body (8), the assembly of first piston body (12) and the second piston body (8) is piston upper annulus (2) and piston bottom annular space (1) with the spatial separation between wellbore casing (13) inwall and the dual channel drill string outer tube (6).
2. a kind of dual channel drill string hydraulic piston pressurizing tool according to claim 1, it is characterized in that, the airtight first that is connected with seals (10) between described first piston body (12) and described the second piston body (8), airtight second sealing (11), the airtight three seals (9) that is connected with between described the second piston body (8) and wellbore casing (13) inwall of being connected with between described first piston body (12) and the described dual channel drill string outer tube (6).
3. a kind of dual channel drill string hydraulic piston pressurizing tool according to claim 2 is characterized in that, is the axial static sealing between described first piston body (12) and the described dual channel drill string outer tube (6); Be axial movable sealing between described the second piston body (8) and wellbore casing (13) inwall; Be circumferential movable sealing between described first piston body (12) and described the second piston body (8).
4. a kind of dual channel drill string hydraulic piston pressurizing tool according to claim 3 is characterized in that, described first sealing (10) is circumferential movable sealing; Described second sealing (11) is axial movable sealing; Described three seals (9) is axial movable sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544421 CN202850893U (en) | 2012-10-23 | 2012-10-23 | Double channel drill stem hydraulic power piston pressure adding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220544421 CN202850893U (en) | 2012-10-23 | 2012-10-23 | Double channel drill stem hydraulic power piston pressure adding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202850893U true CN202850893U (en) | 2013-04-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220544421 Expired - Fee Related CN202850893U (en) | 2012-10-23 | 2012-10-23 | Double channel drill stem hydraulic power piston pressure adding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202850893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437516A (en) * | 2016-11-14 | 2017-02-22 | 郑州神利达钻采设备有限公司 | Hydrodynamic non-drill-rod anti-deflection drilling machine and working method of supporting stretchable device of hydrodynamic non-drill-rod anti-deflection drilling machine |
-
2012
- 2012-10-23 CN CN 201220544421 patent/CN202850893U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437516A (en) * | 2016-11-14 | 2017-02-22 | 郑州神利达钻采设备有限公司 | Hydrodynamic non-drill-rod anti-deflection drilling machine and working method of supporting stretchable device of hydrodynamic non-drill-rod anti-deflection drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 362000 Fujian city of Quanzhou province Quanzhou economic and Technological Development Zone auspicious Road No. 577 San C Business Center Building 2 layer Patentee after: FUJIAN SHUANG HUAN ENERGY TECHNOLOGY CO., LTD. Address before: 362000 A, exhibition Town, Licheng District, Quanzhou, Fujian Patentee before: Quanzhou Twindisc Energy Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |