CN201714339U - Underground valve for preventing formation loss - Google Patents
Underground valve for preventing formation loss Download PDFInfo
- Publication number
- CN201714339U CN201714339U CN2010202123056U CN201020212305U CN201714339U CN 201714339 U CN201714339 U CN 201714339U CN 2010202123056 U CN2010202123056 U CN 2010202123056U CN 201020212305 U CN201020212305 U CN 201020212305U CN 201714339 U CN201714339 U CN 201714339U
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- valve
- sealing plug
- piston rod
- hole
- spring strut
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- Expired - Fee Related
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Abstract
The utility model discloses an underground valve for preventing formation loss which includes a releasing mechanism, a fishing mechanism, a bidirectional circulating mechanism, a pressure adjusting mechanism, a sealing mechanism and a locking mechanism. A releasing joint is connected with a ball seat, an upper joint, a lower joint, a fishing joint, a spring cylinder, a piston rod, an outer jacket and a sealing plug in sequence; a pressure rising steel ball is arranged on the ball seat; a sealing steel ball is arranged on a piston rod; the upper part of the sealing plug is provided with a lower strengthening block; and the middle part of the sealing plug is provided with an elastic sleeve. The underground valve for preventing formation loss has strong coupling performance, can be matched with packers like Y445, and a filling tool, has multiple functions, not only can prevent formation loss and protect the formation, but also can successfully implement formation treatment, and simultaneously keeps the normal production of an oil field, has the characteristics of convenient overhauling, replacing and using, etc, and can be broadly applied in the underground operating technique tools of oil exploitation.
Description
One, technical field
The utility model relates to the downhole tool that is applied to oil exploitation, the anti-stratum leakage in particularly a kind of down-hole valve.
Two, background technology
During oil exploitation well down-hole pump detection and workover, flushing fluid is often missed into stratum, and the stratum is polluted.Traditional anti-stratum leakage process tool is by salvaging mechanism, the mechanism of two-way circulating, pressure regulating mechanism, sealing mechanism, set upright formations such as vibration proof mechanism, for oil exploitation anti-stratum leakage contributes, but it exists following shortcoming or deficiency simultaneously: salvage with steel wire when 1) salvaging, make steel wire stressed back fracture easily, and make salvaging unsuccessful; 2) sealing plug is too short, and sealing is not in place when cooperating with the Y445 packer; 3) ball seat that cooperates with sealed steel ball is a common material, corrosive wear easily.
Three, summary of the invention
The purpose of this utility model provides the anti-stratum leakage in a kind of down-hole valve, adopt the co-ordinative construction of releasing gadget, salvaging mechanism, the mechanism of two-way circulating, pressure regulating mechanism, sealing mechanism and retaining mechanism, mechanism is flexible, effect is remarkable, the shortcoming and defect that overcomes effectively or avoid existing in the above-mentioned prior art.
The anti-stratum leakage in down-hole described in the utility model valve comprises releasing gadget, salvaging mechanism, the mechanism of two-way circulating, pressure regulating mechanism, sealing mechanism and retaining mechanism.Described back-off sub is connected with ball seat, top connection, lower contact, fishing joint, spring strut, piston rod, oversheath and sealing plug in turn, be mounted with pressing steel balls on the ball seat, be installed on sealed steel ball on the piston rod, spring strut is equipped with outer spring outward, spring strut is equipped with wiper block outside the top, between spring strut and the piston rod inner spring is installed, sealing plug is equipped with down wiper block outside the top, the outer resilient sleeve that is equipped with in sealing plug middle part.
Wherein, described ball seat top is fixed by copper pin and back-off sub, and the ball seat inner chamber is equipped with and hangs pin.Described back-off sub bottom is the claw type structure, and the end of its claw type is provided with the outer protrusion that matches with the inner groovy of top connection bottom.In the middle of the described fishing joint be solid construction, and there was perforate side about this was solid, with the junction of spring strut check pin is installed.Described piston rod top is provided with outer lug boss, matches with the interior step of spring strut in this outer lug boss top, and the bottom is the footstock of inner spring, and the middle part is provided with through hole.The middle and upper part of described spring strut is provided with through hole, and this through hole is connected with the middle part through hole of piston rod when piston rod is descending.Described oversheath is installed on the outside of spring strut, and saves as the base of outer spring.Described sealing plug is outer ladder distressed structure, and its middle part distortion place is equipped with resilient sleeve, and its underpart is the sealing plug structure.O type circle is installed on described ball seat, spring strut, the sealing plug.
The utility model has following advantage compared with prior art:
1, matching is strong, can with packer such as Y445, the supporting use of packing tool;
2, function is many, can prevent the stratum leakage, and the protection stratum can successfully be carried out the stratum again and be handled, and keeps the oil well ordinary production simultaneously;
3, maintenance, replacing, easy to use;
Salvage with dragging for lance when 4, salvaging, salvage easy success rate height;
5, the sealing plug lengthening is respond well when cooperating with the Y445 packer;
6, the ball seat that cooperates with sealed steel ball is a stainless steel material, and is corrosion-resistant not easy to wear.
Four, description of drawings
Accompanying drawing is a kind of example structure schematic diagram of the present utility model
Five, the specific embodiment
Consult accompanying drawing, the anti-stratum leakage in a kind of down-hole valve comprises releasing gadget, the mechanism of two-way circulating, pressure regulating mechanism and seal-locking mechanism.Back-off sub 1 is connected with ball seat 6, top connection 7, lower contact 8, fishing joint 9, spring strut 13, piston rod 14, oversheath 17 and sealing plug 19 in turn, be mounted with pressing steel balls 2 on the ball seat 6, be installed on sealed steel ball 10 on the piston rod 14, the spring strut 13 outer outer springs 15 that are equipped with, spring strut is equipped with wiper block 12 outside 13 tops, between spring strut 13 and the piston rod 14 inner spring 16 is installed, sealing plug is equipped with down wiper block 18 outside 19 tops, and sealing plug is equipped with resilient sleeve 20 outside 19 middle parts.
Ball seat 6 tops are fixed by copper pin 4 and back-off sub 1, and ball seat 6 inner chambers are equipped with and hang pin 5.Back-off sub 1 bottom is the claw type structure, and the end of its claw type is provided with the outer protrusion that matches with the inner groovy of top connection 7 bottoms.In the middle of the fishing joint 9 be solid construction, and there was perforate side about this was solid, with the junction of spring strut 13 check pin 11 is installed.Piston rod 14 tops are provided with outer lug boss, match with the interior step of spring strut 13 in this outer lug boss top, and the bottom is the footstock of inner spring 16, and the middle part is provided with through hole.The middle and upper part of spring strut 13 is provided with through hole, and this through hole is connected with the middle part through hole of piston rod 14 when piston rod 14 is descending.Oversheath 17 is installed on the outside of spring strut 13, and saves as the base of outer spring 15.Sealing plug 19 is outer ladder distressed structure, and its middle part distortion place is equipped with resilient sleeve 20, and its underpart is the sealing plug structure.O type circle 3 is installed on described ball seat 6, spring strut 13, the sealing plug 19.
During use, above of the present utility model is releasing gadget, oil pipe was suppressed after soon the utility model descended the interior assigned address of well, copper pin 4 can be cut off, ball seat 6 walks downward under the effect of pressure, till the pin 5 of being draped hangs, this moment the upper lifting pipe post, back-off sub 1 claw contracts inwards, the proposition of can giving up.In the middle of the fishing joint 9 be solid section, and there is perforate the side, and this form of structure can guarantee that protection sealed steel ball 10 when fuel-displaced is not subjected to the impact of oil stream in the front, and oil stream passes through in the side of sealed steel ball 10, from the side perforate outflow of fishing joint 9.When oil reservoir is handled, treatment fluid pressure acts on the sealed steel ball 10, make piston rod 14 compression inner springs 16, piston rod 14 is walked about downwards, when the hole of the hole of piston rod 14 and spring strut 13 is communicated with, treatment fluid can be by these two kinds of holes communication passage walk downward along the inner surface of piston rod 14 always, arrive oil reservoir at last.Resilient sleeve 20 can guarantee that the utility model can not leave packer when carrying on giving up suppressing, and operate as normal.Sealing plug 19 can connect packer and other kits.
When going into the well, the utility model and the supporting use of oil reservoir upper packer (as: Y445 type packer, packing tool).Earlier packer is arrived design attitude down, seat seals give up (or sand control is given up), after tripping out tubing string, following oil pipe band down-hole the utility model, arrive the down-hole and stay the well top of fish, the utility model is sealed the lock portion insertion stay in the well packer central tube sealing drum, and pressurization 20KN-30KN, accuracy of judgement importing back oil pipe is suppressed the utility model and is sent into tubing string and put aside.Descend afterwards flow string, oil well drops into ordinary production.
When flow string needed pump detection and workover, flushing fluid was under effect of the present utility model, and liquid that can not enters the following packer bottom of the utility model, can only finish kill-job circularly for functional oil.(as: de-plugging acidifying) suppressed by ground pump truck when oil reservoir need be handled, and when pressure reached the 8MPa left and right sides, fluid can enter inner chamber of the present utility model, enters oil reservoir through sealing plug, thereby reaches the purpose of handling oil reservoir.When pump truck stops to suppress, the utility model inner chamber is closed automatically, is in the ordinary production state.
When need were changed the utility model, " the distinguish make-up dragged for lance or 3-1/2 slip socket fishing string, can pull the utility model out, overhauls or changes as long as flow string is tripped out following 2-7/8.
Claims (9)
1. valve is missed on anti-stratum, a down-hole, comprise releasing gadget, salvaging mechanism, the mechanism of two-way circulating, pressure regulating mechanism, sealing mechanism and retaining mechanism, it is characterized in that described back-off sub in turn with ball seat, top connection, lower contact, fishing joint, spring strut, piston rod, oversheath is connected with sealing plug, be mounted with pressing steel balls on the ball seat, be installed on sealed steel ball on the piston rod, spring strut is equipped with outer spring outward, spring strut is equipped with wiper block outside the top, between spring strut and the piston rod inner spring is installed, sealing plug is equipped with down wiper block outside the top, the outer resilient sleeve that is equipped with in sealing plug middle part.
2. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that described ball seat top is fixed by copper pin and back-off sub, and the ball seat inner chamber is equipped with and hangs pin.
3. the anti-stratum leakage in down-hole according to claim 1 and 2 valve is characterized in that described back-off sub bottom is the claw type structure, and the end of its claw type is provided with the outer protrusion that matches with the inner groovy of top connection bottom.
4. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that being solid construction in the middle of the described fishing joint, and there is perforate this solid side up and down, with the junction of spring strut check pin is installed.
5. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that described piston rod top is provided with outer lug boss, matches with the interior step of spring strut in this outer lug boss top, and the bottom is the footstock of inner spring, and the middle part is provided with through hole.
6. valve is missed on anti-stratum, down-hole according to claim 1 or 5, it is characterized in that the middle and upper part of described spring strut is provided with through hole, and this through hole is connected with the middle part through hole of piston rod when piston rod is descending.
7. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that described oversheath is installed on the outside of spring strut, and saves as the base of outer spring.
8. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that described sealing plug is outer ladder distressed structure, and its middle part distortion place is equipped with resilient sleeve, and its underpart is the sealing plug structure.
9. the anti-stratum leakage in down-hole according to claim 1 valve is characterized in that being equipped with on described ball seat, spring strut, the sealing plug O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202123056U CN201714339U (en) | 2010-05-24 | 2010-05-24 | Underground valve for preventing formation loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202123056U CN201714339U (en) | 2010-05-24 | 2010-05-24 | Underground valve for preventing formation loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201714339U true CN201714339U (en) | 2011-01-19 |
Family
ID=43460337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202123056U Expired - Fee Related CN201714339U (en) | 2010-05-24 | 2010-05-24 | Underground valve for preventing formation loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201714339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154248A (en) * | 2014-08-14 | 2014-11-19 | 中科金佳（北京）油田技术开发有限公司 | Repeatedly opened and closed anti-leakage valve with cylindrical panel valve sealing structure |
-
2010
- 2010-05-24 CN CN2010202123056U patent/CN201714339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154248A (en) * | 2014-08-14 | 2014-11-19 | 中科金佳（北京）油田技术开发有限公司 | Repeatedly opened and closed anti-leakage valve with cylindrical panel valve sealing structure |
| CN104154248B (en) * | 2014-08-14 | 2016-04-06 | 中科金佳（北京）油田技术开发有限公司 | Be provided with the multiple switching leak-resistance valve of cylndrical surface plate valve sealing configuration |
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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: 20110119 Termination date: 20160524 |