CN203925403U - Downhole drill expandable sleeve is swollen seal apparatus - Google Patents
Downhole drill expandable sleeve is swollen seal apparatus Download PDFInfo
- Publication number
- CN203925403U CN203925403U CN201420314949.4U CN201420314949U CN203925403U CN 203925403 U CN203925403 U CN 203925403U CN 201420314949 U CN201420314949 U CN 201420314949U CN 203925403 U CN203925403 U CN 203925403U
- Authority
- CN
- China
- Prior art keywords
- wall
- protruding block
- block mounting
- groove
- top connection
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to swollen seal apparatus technical field, is the swollen seal apparatus of a kind of downhole drill expandable sleeve, and it comprises top connection, locates locked cylinder, lower contact and central tube; In the lower inner wall of top connection, there is installation annular groove, locate top bar groove and the groove of getting out of a predicament or an embarrassing situation that in the external wall of upper portion of locked cylinder, have external diameter to increase successively from top to bottom, the outer wall that the groove of topping bar is arranged in the lower lumen of top connection and the groove of getting out of a predicament or an embarrassing situation is fixedly installed togather with the inwall that annular groove is installed.The utility model reasonable and compact in structure, easy and simple to handle, in not swollen envelope duty, realize moment of torsion transmission, under swollen envelope duty, realize the operation of whipping pipe and the operation of swollen envelope expansion tube, have good swollen envelope effect, for the follow-up operation of creeping into provides safeguard, each parts are Replacement Part, be convenient to maintenance and reuse, instrument completes one-stop operation and goes out after well, reusable after the clean of necessity and maintenance, the effectively perfect complete technical equipment of gas underbalance Sleeve drill.
Description
Technical field
the utility model relates to swollen seal apparatus technical field, is the swollen seal apparatus of a kind of downhole drill expandable sleeve.
Background technology
the drilling well of gas underbalance institute mainly contains bore hole, screen casing and three kinds of modes of well cementation in completion: barefoot completion easily occurs the accidents such as sand buries, well slough in the production later stage; Sieve tube completion application is relatively many, and the technological deficiency exposing is at present to implement selective layering fracturing reform; Well cementation completion has been avoided the technological deficiency of barefoot completion and sieve tube completion simultaneously, but its technology short slab that significantly weakens gas underbalance well drilling completion storage guarantor effect makes its application quantity in gas brill reservoir completions process very little.Meanwhile, in During Air Drilling, be prone to the lock of tool drilling that cave-in causes, and build the pressure by jarring, bubble acid, fluid, push up the almost very difficult unfreezings of conventional means such as logical, major part adopts the means solution accident of back-off, backfill, sidetracking etc. by force, not only destroy precursor gas completely and be drilled to fruit, well track variation was simultaneously produced and is brought a lot of inconvenience the later stage.When completion, swollen being honored as a queen of expandable tubular can be close to the borehole wall and realize the sealing borehole wall, but existing inflatable packer is not good enough to the expansion effect of expandable tubular, if expandable tubular can not effectively expand, can affect follow-up production operation equally.
Summary of the invention
the utility model provides a kind of downhole drill expandable sleeve swollen seal apparatus, has overcome the deficiency of above-mentioned prior art, and it can effectively solve the not good enough problem of existing inflatable packer implementation result for expandable tubular.
the technical solution of the utility model realizes by following measures: the swollen seal apparatus of a kind of downhole drill expandable sleeve, comprises top connection, locates locked cylinder, lower contact and central tube, in the lower inner wall of top connection, there is installation annular groove, locate top bar groove and the groove of getting out of a predicament or an embarrassing situation that in the external wall of upper portion of locked cylinder, have external diameter to increase successively from top to bottom, the outer wall that the groove of topping bar is arranged in the lower lumen of top connection and the groove of getting out of a predicament or an embarrassing situation is fixedly installed togather with the inwall that annular groove is installed, on the middle part outer wall of top connection, along even circumferential, be distributed with the upper protruding block mounting groove of at least two, on the locked drum outer wall in location below top connection, there is the lower protruding block mounting groove corresponding with upper protruding block mounting groove, in the upper end inwall of lower contact and lower inner wall, one is fixed with upper protruding block and the lower protruding block corresponding with upper protruding block mounting groove and lower protruding block mounting groove respectively, lower contact is sleeved on the upper and upper protruding block of the locked cylinder of top connection and location and lower protruding block lays respectively in upper protruding block mounting groove and lower protruding block mounting groove, in the upper inside wall of top connection, one is fixed with spacing interior ring platform, in the external wall of upper portion of central tube, one is fixed with annular frustum wide at the top and narrow at the bottom, the top inner chamber of locating locked cylinder is the up big and down small bellmouth corresponding with annular frustum, locate in the lower inner wall of locked cylinder one be fixed with install in ring platform, central tube is sleeved on spacing interior ring platform and encircles in the inner chamber of the locked cylinder of top connection and location between platform in installing, the internal diameter of central tube is less than the internal diameter of spacing interior ring platform, in the lower end of central tube and encircle in installing between the upper end of platform and be installed with Compress Spring, in top connection below corresponding upper protruding block mounting groove above the locked cylinder in location, there is radial direction through hole, on annular frustum outer wall, there is the axially directed groove corresponding with radial direction through hole, in every axially directed groove and the radial direction through hole corresponding with every axially directed groove, swollen end socket is installed, in the lower contact between middle part to the upper end of lower contact of lower protruding block, there is axial slot, every slot is positioned at the both sides of each upper protruding block, on lower contact outer wall between the upper end of lower protruding block to the lower end of lower contact, there is axial cutting pre-formed joint, every cutting pre-formed joint is between every two slots, on the lower end outer wall of lower contact, there is screw thread.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
the outer end of above-mentioned swollen end socket is outer little interior frustum large, wide at the top and narrow at the bottom, and the outer end outer wall of swollen end socket is level and smooth cambered surface.
above-mentioned spacing interior ring platform is ring platform in up-narrow and down-wide taper, and the upper surface of spacing interior ring platform is oblique inclined-plane under interior, and the upper end inwall of central tube is up big and down small spherical cambered surface, and the bottom diameter of the upper-end inner diameter of central tube and spacing interior ring platform matches.
on the middle part outer wall of above-mentioned top connection, along even circumferential, be distributed with three upper protruding block mounting grooves, on the locked drum outer wall in location below top connection, there are three lower protruding block mounting grooves corresponding with upper protruding block mounting groove, on the upper end inwall of lower contact, one is fixed with three upper protruding blocks corresponding with upper protruding block mounting groove, in the lower inner wall of lower contact, one is fixed with three lower protruding blocks corresponding with lower protruding block mounting groove, in the top connection below corresponding upper protruding block mounting groove above the locked cylinder in location, has three radial direction through hole.
the upper end outer wall of above-mentioned annular frustum is the face of cylinder matching with central tube internal diameter, is installed with sealing ring on the upper end outer wall of annular frustum, between the inwall of the locked cylinder of the bottom outer wall of central tube and location, is installed with sealing ring.
the outer wall of the above-mentioned groove of getting out of a predicament or an embarrassing situation is fixedly installed togather by screw thread with the inwall that annular groove is installed, and on the top connection inwall of spacing interior ring platform top, has screw thread.
the utility model reasonable and compact in structure, easy and simple to handle, in not swollen envelope duty, realize moment of torsion transmission, under swollen envelope duty, realize the operation of whipping pipe and the operation of swollen envelope expansion tube, have good swollen envelope effect, for the follow-up operation of creeping into provides safeguard, each parts are Replacement Part, be convenient to maintenance and reuse, instrument completes one-stop operation and goes out after well, reusable after the clean of necessity and maintenance, the effectively perfect complete technical equipment of gas underbalance Sleeve drill.
Accompanying drawing explanation
accompanying drawing 1 is looked half section structural representation for the master of the utility model most preferred embodiment.
accompanying drawing 2 is that the A-A of accompanying drawing 1 is to sectional structure schematic diagram.
accompanying drawing 3 is that the B-B of accompanying drawing 1 is to sectional structure schematic diagram.
accompanying drawing 4 is that the C-C of accompanying drawing 1 is to sectional structure schematic diagram.
coding in accompanying drawing is respectively: 1 is top connection, and 2 is the locked cylinder in location, and 3 is lower contact, 4 is upper protruding block, and 5 is lower protruding block, and 6 is spacing interior ring platform, cylinder centered by 7,8 is annular frustum, 9 is bellmouth, 10 is ring platform in installing, and 11 is Compress Spring, and 12 is radial direction through hole, 13 is axially directed groove, 14 is swollen end socket, and 15 is cutting pre-formed joint, and 16 is sealing ring.
The specific embodiment
the utility model is not subject 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 is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2,3,4, the swollen seal apparatus of this downhole drill expandable sleeve comprises top connection 1, locates locked cylinder 2, lower contact 3 and central tube 7, in the lower inner wall of top connection 1, there is installation annular groove, locate top bar groove and the groove of getting out of a predicament or an embarrassing situation that in the external wall of upper portion of locked cylinder 2, have external diameter to increase successively from top to bottom, the outer wall that the groove of topping bar is arranged in the lower lumen of top connection and the groove of getting out of a predicament or an embarrassing situation is fixedly installed togather with the inwall that annular groove is installed, on the middle part outer wall of top connection 1, along even circumferential, be distributed with the upper protruding block mounting groove of at least two, on location locked cylinder 2 outer walls below top connection 1, there is the lower protruding block mounting groove corresponding with upper protruding block mounting groove, in the upper end inwall of lower contact 3 and lower inner wall, one is fixed with the upper protruding block 4 corresponding with upper protruding block mounting groove and lower protruding block mounting groove and lower protruding block 5 respectively, lower contact 3 is sleeved on the locked cylinder 2 of top connection 1 and location and upper protruding block 4 and lower protruding block 5 lay respectively in upper protruding block mounting groove and lower protruding block mounting groove, in the upper inside wall of top connection 1, one is fixed with spacing interior ring platform 6, in the external wall of upper portion of central tube 7, one is fixed with annular frustum 8 wide at the top and narrow at the bottom, the top inner chamber of locating locked cylinder 2 is the up big and down small bellmouth 9 corresponding with annular frustum 8, locate in the lower inner wall of locked cylinder 2 one be fixed with install in ring platform 10, central tube 7 is sleeved on spacing interior ring platform 6 and encircles in the inner chamber of the locked cylinder 2 of top connection 1 and location between platform 10 in installing, the internal diameter of central tube 7 is less than the internal diameter of spacing interior ring platform 6, in the lower end of central tube 7 and encircle in installing between the upper end of platform 10 and be installed with Compress Spring 11, in top connection 1 below corresponding upper protruding block mounting groove above the locked cylinder 2 in location, there is radial direction through hole 12, on annular frustum 8 outer walls, there is the axially directed groove 13 corresponding with radial direction through hole 12, in every axially directed groove 13 and the radial direction through hole 12 corresponding with every axially directed groove 13, swollen end socket 14 is installed, in the lower contact 3 between middle part to the upper end of lower contact 3 of lower protruding block 5, there is axial slot, every slot is positioned at the both sides of each upper protruding block 4, on lower contact 3 outer walls between the upper end of lower protruding block 5 to the lower end of lower contact 3, there is axial cutting pre-formed joint 15, every cutting pre-formed joint 15 is between every two slots, on the lower end outer wall of lower contact 3, there is screw thread.Because axially directed groove 13 is positioned on annular frustum 8, one end of swollen end socket 14 is positioned at axially directed groove 13, one end is positioned at radial direction through hole 12, when central tube 7 moves down, under the effect of annular frustum 8, swollen end socket 14 outwards moves along radial direction through hole 12, owing to there being the effect of axially directed groove 13, can there is not radial deflection in swollen end socket 14, the effectively smooth enforcement of assurance work, after swollen end socket 14 outwards moves, because slot is arranged at the top of lower contact 3, swollen end socket 14 can radially eject lower contact 3, upper protruding block 4 is deviate from upper protruding block mounting groove, swollen end socket 14 continues outwards to move, continue to eject lower contact 3, because slot reaches lower protruding block 5 middle parts, therefore lower protruding block 5 also can be deviate from lower protruding block mounting groove under the effect of swollen end socket 14, during use, between the corrugated expandable pipe of gas underbalance Sleeve drill completion technique drilling tool used and interior jet-preventing tool, this device is installed, the upper end of the lower end of lower contact 3 and corrugated expandable pipe is installed together by screw thread, at needs, swollen sealing Guan Shixian drops into ball by drilling tool water hole, pitching seat is blocked center cylinder 7 on the upper surface of central tube 7, in drilling tool, suppress to the whipping pipe pressure of design, on maintaining under the interior band of drilling tool pressure condition, carry drilling tool, by drilling tool up stroke, weight indicator and drilling tool internal pressure, comprehensively analyze tail pipe and whether get rid of to shaft bottom, after being got rid of, definite tail pipe continues to suppress to the swollen envelope expansion tube operating pressure of design, maintain and under the unattenuated condition of drilling tool internal pressure, rotate brill dish and transfer gradually the swollen envelope expansion tube of drilling tool, when upper protruding block 4 and lower protruding block 5 are deviate from after upper protruding block mounting groove and lower protruding block mounting groove completely, on the locked cylinder 2 of the relative top connection 1 of lower contact 3 and location, move, when having the lower contact 3 at cutting pre-formed joint 15 positions to move to swollen end socket 14 position, cutting pre-formed joint 15 is torn but does not tear and wear, the bottom of lower contact 3 also can radially expand like this, when the corrugated expandable pipe connecting when lower contact 3 lower ends arrives swollen end socket 14 position, pre-formed joint on corrugated expandable pipe is along with tubing is upheld and automatically to be opened generation and radially expand, form the passage that oil gas enters sleeve pipe, so, complete swollen envelope operation, when complete swollen being honored as a queen of corrugated expandable pipe, be close to the borehole wall and realize the sealing borehole wall, when bore meeting down-hole, cave in that lock of tool drilling drilling tool is stuck cannot be by normal method unfreezing time, by the direct swollen envelope corrugated expandable pipe of the utility model, the follow-up drilling tool that is lowered to a little size class continues to creep into.The utlity model has good swollen envelope effect, the external diameter of lower contact 3 is 73mm to 508mm, in practical application, outside dimension specification of the present utility model is fixed according to the corrugated expandable pipe size of institute's cooperating, has guaranteed its requirement to sleeve pipe in the drilling well of full-bore well.
can according to actual needs, the swollen seal apparatus of above-mentioned downhole drill expandable sleeve be made further optimization and/or improvements:
as shown in Figure 1, the outer end of swollen end socket 14 is outer little interior frustum large, wide at the top and narrow at the bottom, and the outer end outer wall of swollen end socket 14 is level and smooth cambered surface.This shape of swollen end socket 14 facilitates swollen end socket 14 can not cause to it situation of any card, extension in operation that lower contact 3 and inflatable tubing are expanded.
as shown in Figure 1, spacing interior ring platform 6 is the up-narrow and down-wide interior ring of taper platform, and the upper surface of spacing interior ring platform 6 is oblique inclined-plane under interior, and the upper end inwall of central tube 7 is up big and down small spherical cambered surface, and the bottom diameter of the upper-end inner diameter of central tube 7 and spacing interior ring platform matches.The shape of the shape of spacing interior ring platform 6 and central tube 7 upper surfaces all facilitate with pitching better seat on the upper surface of central tube 7, for follow-up, suppress operation and facilitate.
as shown in accompanying drawing 1,2,3,4, on the middle part outer wall of top connection 1, along even circumferential, be distributed with three upper protruding block mounting grooves, on location locked cylinder 2 outer walls below top connection 1, there are three lower protruding block mounting grooves corresponding with upper protruding block mounting groove, on the upper end inwall of lower contact 3, one is fixed with three upper protruding blocks corresponding with upper protruding block mounting groove 4, in the lower inner wall of lower contact 3, one is fixed with three lower protruding blocks corresponding with lower protruding block mounting groove 5, in the top connection 1 below corresponding upper protruding block mounting groove above the locked cylinder 2 in location, has three radial direction through hole 12.
as shown in Figure 1, the upper end outer wall of annular frustum 8 is the face of cylinder matching with central tube 7 internal diameters, is installed with sealing ring 16 on the upper end outer wall of annular frustum 8, between the inwall of the locked cylinder 2 of the bottom outer wall of central tube 7 and location, is installed with sealing ring 16.Sealing ring 16 on annular frustum 8 outer walls is realized the movable sealing between central tube 7 and top connection 1 inwall, central tube 7 and the locked cylinder in location 2 between sealing ring 16 realize central tube 7 and the locked cylinder 2 in location between movable sealing effect, even when input ball is suppressed, also can guarantee good sealing function.
as shown in Figure 1, the outer wall of the groove of getting out of a predicament or an embarrassing situation is fixedly installed togather by screw thread with the inwall that annular groove is installed, and on top connection 1 inwall of spacing interior ring platform 6 tops, has screw thread.Screw thread is easy for installation is installed on dismounting.
the utility model is realized moment of torsion transmission in not swollen envelope duty, under swollen envelope duty, is realized the operation of whipping pipe and the operation of swollen envelope expansion tube, easy and simple to handle, there is good swollen envelope effect, for the follow-up operation of creeping into provides safeguard, each parts of the utility model are Replacement Part, are convenient to maintenance and reuse, and instrument completes one-stop operation and goes out after well, reusable after the clean and maintenance of necessity, the utility model improves the complete technical equipment of gas underbalance Sleeve drill.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. the swollen seal apparatus of downhole drill expandable sleeve, is characterized in that comprising top connection, locates locked cylinder, lower contact and central tube, in the lower inner wall of top connection, there is installation annular groove, locate top bar groove and the groove of getting out of a predicament or an embarrassing situation that in the external wall of upper portion of locked cylinder, have external diameter to increase successively from top to bottom, the outer wall that the groove of topping bar is arranged in the lower lumen of top connection and the groove of getting out of a predicament or an embarrassing situation is fixedly installed togather with the inwall that annular groove is installed, on the middle part outer wall of top connection, along even circumferential, be distributed with the upper protruding block mounting groove of at least two, on the locked drum outer wall in location below top connection, there is the lower protruding block mounting groove corresponding with upper protruding block mounting groove, in the upper end inwall of lower contact and lower inner wall, one is fixed with upper protruding block and the lower protruding block corresponding with upper protruding block mounting groove and lower protruding block mounting groove respectively, lower contact is sleeved on the upper and upper protruding block of the locked cylinder of top connection and location and lower protruding block lays respectively in upper protruding block mounting groove and lower protruding block mounting groove, in the upper inside wall of top connection, one is fixed with spacing interior ring platform, in the external wall of upper portion of central tube, one is fixed with annular frustum wide at the top and narrow at the bottom, the top inner chamber of locating locked cylinder is the up big and down small bellmouth corresponding with annular frustum, locate in the lower inner wall of locked cylinder one be fixed with install in ring platform, central tube is sleeved on spacing interior ring platform and encircles in the inner chamber of the locked cylinder of top connection and location between platform in installing, the internal diameter of central tube is less than the internal diameter of spacing interior ring platform, in the lower end of central tube and encircle in installing between the upper end of platform and be installed with Compress Spring, in top connection below corresponding upper protruding block mounting groove above the locked cylinder in location, there is radial direction through hole, on annular frustum outer wall, there is the axially directed groove corresponding with radial direction through hole, in every axially directed groove and the radial direction through hole corresponding with every axially directed groove, swollen end socket is installed, in the lower contact between middle part to the upper end of lower contact of lower protruding block, there is axial slot, every slot is positioned at the both sides of each upper protruding block, on lower contact outer wall between the upper end of lower protruding block to the lower end of lower contact, there is axial cutting pre-formed joint, every cutting pre-formed joint is between every two slots, on the lower end outer wall of lower contact, there is screw thread.
2. the swollen seal apparatus of downhole drill expandable sleeve according to claim 1, the outer end that it is characterized in that swollen end socket is outer little interior frustum large, wide at the top and narrow at the bottom, and the outer end outer wall of swollen end socket is level and smooth cambered surface.
3. the swollen seal apparatus of downhole drill expandable sleeve according to claim 1 and 2, it is characterized in that spacing interior ring platform is the up-narrow and down-wide interior ring of taper platform, and the upper surface of spacing interior ring platform is oblique inclined-plane under interior, the upper end inwall of central tube is up big and down small spherical cambered surface, and the bottom diameter of the upper-end inner diameter of central tube and spacing interior ring platform matches.
4. the swollen seal apparatus of downhole drill expandable sleeve according to claim 1 and 2, it is characterized in that along even circumferential, being distributed with three upper protruding block mounting grooves on the middle part outer wall of top connection, on the locked drum outer wall in location below top connection, there are three lower protruding block mounting grooves corresponding with upper protruding block mounting groove, on the upper end inwall of lower contact, one is fixed with three upper protruding blocks corresponding with upper protruding block mounting groove, in the lower inner wall of lower contact, one is fixed with three lower protruding blocks corresponding with lower protruding block mounting groove, in top connection below corresponding upper protruding block mounting groove above the locked cylinder in location, there are three radial direction through hole.
5. the swollen seal apparatus of downhole drill expandable sleeve according to claim 3, it is characterized in that along even circumferential, being distributed with three upper protruding block mounting grooves on the middle part outer wall of top connection, on the locked drum outer wall in location below top connection, there are three lower protruding block mounting grooves corresponding with upper protruding block mounting groove, on the upper end inwall of lower contact, one is fixed with three upper protruding blocks corresponding with upper protruding block mounting groove, in the lower inner wall of lower contact, one is fixed with three lower protruding blocks corresponding with lower protruding block mounting groove, in top connection below corresponding upper protruding block mounting groove above the locked cylinder in location, there are three radial direction through hole.
6. the swollen seal apparatus of downhole drill expandable sleeve according to claim 1 and 2, the upper end outer wall that it is characterized in that annular frustum is the face of cylinder matching with central tube internal diameter, on the upper end outer wall of annular frustum, be installed with sealing ring, between the inwall of the locked cylinder of the bottom outer wall of central tube and location, be installed with sealing ring.
7. the swollen seal apparatus of downhole drill expandable sleeve according to claim 3, the upper end outer wall that it is characterized in that annular frustum is the face of cylinder matching with central tube internal diameter, on the upper end outer wall of annular frustum, be installed with sealing ring, between the inwall of the locked cylinder of the bottom outer wall of central tube and location, be installed with sealing ring.
8. the swollen seal apparatus of downhole drill expandable sleeve according to claim 4, the upper end outer wall that it is characterized in that annular frustum is the face of cylinder matching with central tube internal diameter, on the upper end outer wall of annular frustum, be installed with sealing ring, between the inwall of the locked cylinder of the bottom outer wall of central tube and location, be installed with sealing ring.
9. the swollen seal apparatus of downhole drill expandable sleeve according to claim 5, the upper end outer wall that it is characterized in that annular frustum is the face of cylinder matching with central tube internal diameter, on the upper end outer wall of annular frustum, be installed with sealing ring, between the inwall of the locked cylinder of the bottom outer wall of central tube and location, be installed with sealing ring.
10. the swollen seal apparatus of downhole drill expandable sleeve according to claim 9, the outer wall of the groove that it is characterized in that getting out of a predicament or an embarrassing situation is fixedly installed togather by screw thread with the inwall that annular groove is installed, and on the top connection inwall of spacing interior ring platform top, has screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314949.4U CN203925403U (en) | 2014-06-13 | 2014-06-13 | Downhole drill expandable sleeve is swollen seal apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314949.4U CN203925403U (en) | 2014-06-13 | 2014-06-13 | Downhole drill expandable sleeve is swollen seal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925403U true CN203925403U (en) | 2014-11-05 |
Family
ID=51821232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420314949.4U Withdrawn - After Issue CN203925403U (en) | 2014-06-13 | 2014-06-13 | Downhole drill expandable sleeve is swollen seal apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047564A (en) * | 2014-06-13 | 2014-09-17 | 中国石油集团西部钻探工程有限公司 | Underground drilling-following expandable casing expansion sealing device |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
-
2014
- 2014-06-13 CN CN201420314949.4U patent/CN203925403U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047564A (en) * | 2014-06-13 | 2014-09-17 | 中国石油集团西部钻探工程有限公司 | Underground drilling-following expandable casing expansion sealing device |
| CN106401564A (en) * | 2016-06-07 | 2017-02-15 | 华北科技学院 | Measuring device for rapidly sealing coal seam drill hole during drilling |
| CN106401564B (en) * | 2016-06-07 | 2023-08-08 | 华北科技学院 | Measuring device for drilling while drilling quick sealing coal seam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104213868B (en) | Desirable bore anchor packer | |
| CN110295869B (en) | Expansion liner tube for repeated fracturing and repeated fracturing method | |
| CN102966327B (en) | Expansion tube | |
| CN101906946B (en) | Hydraulic expansion-type rotary liner hanger | |
| CN102996089A (en) | Multi-stage hydraulic expansion tail pipe suspension system with reducing expansion cone for horizontal well for thermal recovery of heavy oil | |
| CN101392633B (en) | Mechanical and hydraulic double-acting expansion sieve tube hanger | |
| CN104763367B (en) | Pigging and pipe scraping integrated tool | |
| CN206439026U (en) | Unidirectional detachable bridge plug | |
| CN205445548U (en) | Outer sliding sleeve formula hydraulic pressure bleeder | |
| CN102373892B (en) | Expansion liner hanger | |
| CN202325333U (en) | Expandable liner hanger | |
| CN206801512U (en) | A kind of underground continuous oil pipe fishing drags for integrated tool with cutting | |
| CN203925403U (en) | Downhole drill expandable sleeve is swollen seal apparatus | |
| CN203420698U (en) | Well completion fracture integrated pipe column for open hole horizontal well | |
| CN201924878U (en) | Half-cementing well completion pipe string | |
| CN104329046A (en) | Rotary hydraulic packer | |
| CN103244082A (en) | Flexible first-time sand control sandblasting technique pipe | |
| CN105625972A (en) | Variable-diameter drift diameter gauge | |
| CN100572742C (en) | Hydraulic expansion type screen pipe hanger | |
| CN202970565U (en) | Thickened oil thermal recovery horizontal well multistage hydraulic pressure expansion tail pipe suspension system with variable diameter expansion cone | |
| CN203308446U (en) | Multi-stage fracturing sliding sleeve free from opening in midway | |
| CN107642344A (en) | Buckling type tail pipe hanger | |
| CN203441409U (en) | Expansion type tail pipe hanging device of thermal production well | |
| CN104047564A (en) | Underground drilling-following expandable casing expansion sealing device | |
| CN108060901B (en) | Release mechanism for open hole patching tool of equal-well-diameter expansion casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20161130 |
|
| AV01 | Patent right actively abandoned |