CN104481491A - Circulation control type casing sliding sleeve closing tool - Google Patents
Circulation control type casing sliding sleeve closing tool Download PDFInfo
- Publication number
- CN104481491A CN104481491A CN201410745007.6A CN201410745007A CN104481491A CN 104481491 A CN104481491 A CN 104481491A CN 201410745007 A CN201410745007 A CN 201410745007A CN 104481491 A CN104481491 A CN 104481491A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- cylinder
- pawl
- lower contact
- closing tool
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 31
- 230000004323 axial length Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 210000000078 claw Anatomy 0.000 abstract 8
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 238000005488 sandblasting Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a cycle control type casing sliding sleeve closing tool which comprises a body, a hydraulic cylinder, a claw cylinder, a reset spring and a lower connector, wherein the hydraulic cylinder is arranged on the body, a liquid passing hole is formed in the matching position of the body and the hydraulic cylinder, the claw cylinder is connected to the lower end of the hydraulic cylinder and is positioned on the outer wall of the body, the reset spring is installed in the claw cylinder, the lower connector is connected to the lower end of the body, the lower connector is hollow or solid, a claw is arranged at the lower end of the claw cylinder, the inner conical surface of the claw is matched with the outer conical surface of the lower connector to enable the claw to extend outwards, and a closing groove matched with the claw in an embedded mode is formed in the. The invention can realize the selective closing of the sleeve sliding sleeve, prevent the gas well from being drowned by a water layer in the later exploitation stage of the oil-gas well, and effectively ensure the continuous and safe exploitation of oil-gas resources.
Description
Technical field
The present invention relates to a kind of oil gas field loop control formula sliding sleeve of bushing closing tool, belong to oil-gas field downhole operation instrument.
Background technology
Sliding sleeve of bushing, as a kind of novel separate stratum fracfturing instrument, obtains abroad and develops widely and use, and in certain scope, also obtains a large amount of tests at home use, achieve good effect.The foreign study sliding sleeve of bushing time is longer, has defined comparatively perfect seriation sliding sleeve of bushing segmentation transformation instrument.The studies in China sliding sleeve of bushing time is shorter, although defined some products, key technology is ripe not enough, also there are some shortcoming and defect in application at the scene.
Patent publication No. CN202064925 U discloses separate stratum fracturing well cementation sliding sleeve, publication date 2011-12-07, comprises top connection 1, lower contact 2, ball seat 3 and controls cover 4.Top connection 1 is connected with upper sleeve, top connection 1 is connected with lower contact 2, lower contact 2 times parts casing pipes are connected, the chamber wall that top connection 1 is connected with lower contact 2 there is outer sandblasting groove 5, ball seat 3 is fixedly connected on by pin the chamber internal upper part that top connection 1 is connected with lower contact 2, ball seat 3 top wall there is sandblasting groove 6 in matching with outer sandblasting groove 5, control cover 4 and be connected to ball seat 3 lower end, control to be equipped with jump ring 7 outside cover lower end, have the draw-in groove matched with jump ring 7 in lower contact 2 bottom, jump ring 7 and the circumferential distance of draw-in groove equal outer sandblasting groove 5 and interior sandblasting groove 6 axial distance.This separate stratum fracturing well cementation sliding sleeve opens rear self-locking, can not close again, special sliding bush closing tool is not had yet, the selective closedown of separate stratum fracturing well cementation sliding sleeve can not be realized, when the oil-gas mining of well through certain hour using this separate stratum fracturing well cementation sliding sleeve to carry out storey increase design, the meeting water outlet of possible some layer of position, when water yield is larger, make this layer lose extraction value, also affect the oil-gas mining of whole mouth well possibly.
Summary of the invention
The object of the invention is to the problems referred to above overcoming prior art existence, a kind of loop control formula sliding sleeve of bushing closing tool is provided.The present invention can realize sliding sleeve of bushing and selectively close, and oil gas well mining later stage water layer can be prevented to be drowned gas well, can effectively ensure that petroleum resources continues safe working.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of loop control formula sliding sleeve of bushing closing tool, it is characterized in that: comprise body, fluid cylinder, play pawl cylinder, back-moving spring and lower contact, described fluid cylinder is arranged on body, body and fluid cylinder cooperation place are provided with liquid pass hole, play pawl cylinder be connected to fluid cylinder lower end and be positioned on body outer wall, described back-moving spring is arranged on and plays in pawl cylinder, described lower contact is connected to body lower end, lower contact is hollow or solid, play pawl cylinder lower end and be provided with bullet pawl, bullet pawl inner conical surface coordinates with lower contact male cone (strobilus masculinus) makes bullet pawl overhanging, be provided with at sliding sleeve inner chamber and play pawl and embed the closedown groove coordinated.
Described liquid pass hole both sides are provided with two cylinder hermetically-sealed constructions, and body and fluid cylinder are sealed and matched by two cylinder hermetically-sealed constructions.
Described lower contact is hollow, coordinates build the pressure with the ball that builds the pressure.
Described lower contact is hollow, forms throttle orifice.
Described lower contact is solid, forms in pipe the structure that builds the pressure.
Described body is hollow, and lower contact cylindrical is provided with centering edge.
The overhanging axial length of described bullet pawl is greater than 25.4mm.
Described closedown groove upper end is straight step, and lower end is that inclined-plane is excessive.
Employing the invention has the advantages that:
1, in the present invention, in pipe and when producing enough pressure reduction outside pipe, play overhanging the embedding with the closedown groove in sliding sleeve of pawl and coordinate, above carry closing tool, just can realize sliding sleeve of bushing and close, simple to operate.
2, in the present invention, pressure release in pipe, returning spring makes bullet pawl cylinder up, plays pawl and reclaims, can trip out closing tool smoothly, handled easily.
3, in the present invention, the overhanging axial length of pawl is played much larger than 25.4mm, can not be chimeric with casing coupling, prevent casing coupling from affecting sliding sleeve of bushing and close operation, success rate is high.
4, in the present invention, when lower contact is solid, produces domestic and international pressure reduction by building the pressure in managing and realize; When lower contact is hollow, produce enough chock pressure differences to realize by the hollow endoporus circulating in lower contact; When lower contact is hollow, also can matching design to build the pressure ball, being built the pressure by pitching is produced pipe inside and outside differential pressure and realizes.
5, the present invention coordinates closedown groove by design on the sliding sleeve of sliding sleeve of bushing, just can realize sliding sleeve of bushing selectively to close, oil gas well mining later stage water layer can be prevented to be drowned gas well, and structure is simple, easy to operate, can effectively ensure that petroleum resources continues safe working.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation
Fig. 2 is the embodiment of the present invention 2 structural representation
Fig. 3 is the embodiment of the present invention 3 structural representation
Fig. 4 is the structural representation of sliding sleeve of bushing
Mark in figure: 1, body, 2, fluid cylinder, 3, play pawl cylinder, 4, back-moving spring, 5, lower contact, 6, liquid pass hole, 7, play pawl, 8, sliding sleeve, 9, close groove.
Detailed description of the invention
Embodiment 1
As a better embodiment be: as shown in Figure 1 and Figure 4, mainly comprise body 1, fluid cylinder 2, bullet pawl cylinder 3, back-moving spring 4, lower contact 5, liquid pass hole 6, play pawl 7, sliding sleeve 8, close groove 9 etc., described fluid cylinder 2 is contained on body 1, described body 1 has liquid pass hole 6 with fluid cylinder 2 matching part, described bullet pawl cylinder 3 is connected to fluid cylinder 2 lower end, and described back-moving spring 4 is arranged on and plays in pawl cylinder 3, and described lower contact 5 is connected to the lower end of body 1, its endoporus is throttle orifice, and cylindrical has centering edge.
There is overhanging bullet pawl 7 described bullet pawl cylinder 3 lower end, and play pawl 7 axial length much larger than 25.4mm, the inner conical surface playing pawl 7 coordinates with the male cone (strobilus masculinus) of lower contact I 5, and the closedown groove 9 played in the sliding sleeve 8 of pawl 7 outer sleeve sliding sleeve embeds and coordinates.
Field conduct mode, the present invention's tubing string is lowered into the sliding sleeve of bushing lower position that need close, turn on pump circulates, the throttle orifice of lower contact 5 inside produces choke pressure, play pawl 7 overhanging and be attached to internal surface of sleeve pipe, upper lifting pipe post, play pawl 7 along internal surface of sleeve pipe upward sliding, play pawl 7 and can pass over casing coupling, chimeric with closedown groove 9 when playing when pawl 7 slides into the closedown groove 9 of sliding sleeve 8, continue upper lifting pipe post, playing pawl 7 leads sliding sleeve 8 up, when upper lifting pipe post and larger resistance, termination of pumping, transfer tubing string one segment distance, bullet pawl 7 is allowed fully to reclaim, upper lifting pipe post, trip out sliding sleeve of bushing closing tool, sliding sleeve of bushing has been closed.This closedown Job Operations is simple, can close water layer and other useless layer, ensure the smooth exploitation of whole mouth well petroleum resources.
Embodiment 2
As another embodiment be: as shown in Figure 2 and Figure 4, mainly comprise body 1, fluid cylinder 2, bullet pawl cylinder 3, back-moving spring 4, lower contact 5, liquid pass hole 6, play pawl 7, sliding sleeve 8, close groove 9 etc., described fluid cylinder 2 is contained on body 1, described body 1 has liquid pass hole 6 with fluid cylinder 2 matching part, described bullet pawl cylinder 3 is connected to fluid cylinder 2 lower end, described back-moving spring 4 is arranged on and plays in pawl cylinder 3, described lower contact 5 is connected to the lower end of body 1, the design of its inner hole builds the pressure ball, and cylindrical has centering edge.
There is overhanging bullet pawl 7 described bullet pawl cylinder 3 lower end, and play pawl 7 axial length much larger than 25.4mm, the inner conical surface playing pawl 7 coordinates with the male cone (strobilus masculinus) of lower contact 5, and the closedown groove 9 played in the sliding sleeve 8 of pawl 7 outer sleeve sliding sleeve embeds and coordinates.
Field conduct mode, the present invention's tubing string is lowered into the sliding sleeve of bushing lower position that need close, input builds the pressure ball, build the pressure the inner hole of ball and lower contact 5, build the pressure, play pawl 7 overhanging and be attached to internal surface of sleeve pipe, upper lifting pipe post, play pawl 7 along internal surface of sleeve pipe upward sliding, play pawl 7 and can pass over casing coupling, chimeric with closedown groove 9 when playing when pawl 7 slides into the closedown groove 9 of sliding sleeve 8, continue upper lifting pipe post, playing pawl 7 leads sliding sleeve 8 up, when upper lifting pipe post and larger resistance, termination of pumping pressure release, transfer tubing string one segment distance, bullet pawl 7 is allowed fully to reclaim, upper lifting pipe post, trip out sliding sleeve of bushing closing tool, sliding sleeve of bushing has been closed.Water layer and other useless layer can be closed, ensure the smooth exploitation of whole mouth well petroleum resources.
Embodiment 3
As an embodiment be again: as shown in Figure 3 and Figure 4, mainly comprise body 1, fluid cylinder 2, bullet pawl cylinder 3, back-moving spring 4, lower contact 5, liquid pass hole 6, play pawl 7, sliding sleeve 8, close groove 9 etc., described fluid cylinder 2 is contained on body 1, described body 1 has liquid pass hole 6 with fluid cylinder 2 matching part, described bullet pawl cylinder 3 is connected to fluid cylinder 2 lower end, and described back-moving spring 4 is arranged on and plays in pawl cylinder 3, and described lower contact 5 is connected to the lower end of body 1, lower contact 5 is solid, and cylindrical has centering edge.
There is overhanging bullet pawl 7 described bullet pawl cylinder 3 lower end, and play pawl 7 axial length much larger than 25.4mm, the inner conical surface playing pawl 7 coordinates with the male cone (strobilus masculinus) of lower contact 5, and the closedown groove 9 played in the sliding sleeve 8 of pawl 7 outer sleeve sliding sleeve embeds and coordinates.
Field conduct mode, the present invention's tubing string is lowered into the sliding sleeve of bushing lower position that need close, build the pressure in pipe, make bullet pawl 7 overhanging and be attached to internal surface of sleeve pipe, upper lifting pipe post, play pawl 7 along internal surface of sleeve pipe upward sliding, play pawl 7 and can pass over casing coupling, chimeric with closedown groove 9 when playing when pawl 7 slides into the closedown groove 9 of sliding sleeve 8, continue upper lifting pipe post, playing pawl 7 leads sliding sleeve 8 up, when upper lifting pipe post and larger resistance, termination of pumping pressure release, transfer tubing string one segment distance, bullet pawl 7 is allowed fully to reclaim, upper lifting pipe post, trip out sliding sleeve of bushing closing tool, sliding sleeve of bushing has been closed.Also can close water layer and other useless layer, ensure the smooth exploitation of whole mouth well petroleum resources.
Embodiment 4
A kind of loop control formula sliding sleeve of bushing closing tool, comprise body 1, fluid cylinder 2, play pawl cylinder 3, back-moving spring 4 and lower contact 5, described fluid cylinder 2 is arranged on body 1, body 1 and fluid cylinder 2 cooperation place are provided with liquid pass hole 6, play pawl cylinder 3 be connected to fluid cylinder 2 lower end and be positioned on body 1 outer wall, described back-moving spring 4 is arranged on and plays in pawl cylinder 3, described lower contact 5 is connected to body 1 lower end, lower contact 5 is hollow or solid, play pawl cylinder 3 lower end and be provided with bullet pawl 7, bullet pawl 7 inner conical surface coordinates with lower contact 5 male cone (strobilus masculinus) makes bullet pawl overhanging, be provided with at sliding sleeve 8 inner chamber and play pawl 7 and embed the closedown groove 9 coordinated.
In the present invention, described liquid pass hole 6 both sides are provided with two cylinder hermetically-sealed constructions, and body 1 and fluid cylinder 2 are sealed and matched by two cylinder hermetically-sealed constructions.
In the present invention, described lower contact 5 is solid or hollow, when lower contact 5 is hollow, coordinates build the pressure or form throttle orifice with the ball that builds the pressure, and lower contact 5 is for forming in pipe the structure that builds the pressure time solid.
In the present invention, described body 1 is hollow, and lower contact 5 cylindrical is provided with centering edge.The overhanging axial length of described bullet pawl 7 is greater than 25.4mm.
In the present embodiment, in the middle part of described sliding sleeve, the closedown groove of inwall is long recess, and closing groove upper end is straight step, and lower end is that inclined-plane is excessive, can coordinate with closing tool, realizes sliding sleeve of bushing and closes.
Operating principle of the present invention is: adopt fluid cylinder mechanism, suppress interior pressure by circulation or pitching or directly suppress interior pressure, pressure reduction is produced inside and outside sliding sleeve of bushing closing tool, fluid cylinder is made to produce end thrust, fluid cylinder moves thus compression reseting spring, promote to play pawl overhanging along the cooperation conical surface of lower contact, on carry sliding sleeve of bushing closing tool, play pawl to slide along internal surface of sleeve pipe, and by casing coupling, then pawl is played chimeric with the closedown groove on the sliding sleeve of sliding sleeve of bushing, lead the up closedown sliding sleeve of bushing of sliding sleeve, then termination of pumping, play pawl to reclaim under the effect of back-moving spring, sliding sleeve of bushing closing tool can be tripped out smoothly, simple to operate, water layer and other useless layer can be closed, ensure the smooth exploitation of whole mouth well petroleum resources.
Claims (8)
1. a loop control formula sliding sleeve of bushing closing tool, it is characterized in that: comprise body (1), fluid cylinder (2), play pawl cylinder (3), back-moving spring (4) and lower contact (5), described fluid cylinder (2) is arranged on body (1), body (1) and fluid cylinder (2) cooperation place are provided with liquid pass hole (6), play pawl cylinder (3) be connected to fluid cylinder (2) lower end and be positioned on body (1) outer wall, described back-moving spring (4) is arranged on and plays in pawl cylinder (3), described lower contact (5) is connected to body (1) lower end, lower contact (5) is for hollow or solid, play pawl cylinder (3) lower end and be provided with bullet pawl (7), bullet pawl (7) inner conical surface coordinates with lower contact (5) male cone (strobilus masculinus) makes bullet pawl (7) overhanging, be provided with at sliding sleeve (8) inner chamber and play pawl (7) and embed the closedown groove (9) coordinated.
2. loop control formula sliding sleeve of bushing closing tool according to claim 1, is characterized in that: described liquid pass hole (6) both sides are provided with two cylinder hermetically-sealed constructions, and body (1) and fluid cylinder (2) are sealed and matched by two cylinder hermetically-sealed constructions.
3. loop control formula sliding sleeve of bushing closing tool according to claim 1, is characterized in that: described lower contact is hollow, coordinates build the pressure with the ball that builds the pressure.
4. loop control formula sliding sleeve of bushing closing tool according to claim 1, is characterized in that: described lower contact is hollow, forms throttle orifice.
5. loop control formula sliding sleeve of bushing closing tool according to claim 1, is characterized in that: described lower contact is solid, forms in pipe the structure that builds the pressure.
6. loop control formula sliding sleeve of bushing closing tool according to claim 3, is characterized in that: described body (1), for hollow, lower contact (5) cylindrical is provided with centering edge.
7. the loop control formula sliding sleeve of bushing closing tool according to claim 1,2 or 4, is characterized in that: the axial length that described bullet pawl (7) is overhanging is greater than 25.4mm.
8. the loop control formula sliding sleeve of bushing closing tool according to claim 1,2,3,4,5 or 6, is characterized in that: described closedown groove upper end is straight step, and lower end is that inclined-plane is excessive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745007.6A CN104481491A (en) | 2014-12-09 | 2014-12-09 | Circulation control type casing sliding sleeve closing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745007.6A CN104481491A (en) | 2014-12-09 | 2014-12-09 | Circulation control type casing sliding sleeve closing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104481491A true CN104481491A (en) | 2015-04-01 |
Family
ID=52756083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410745007.6A Pending CN104481491A (en) | 2014-12-09 | 2014-12-09 | Circulation control type casing sliding sleeve closing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104481491A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN109779588A (en) * | 2017-11-10 | 2019-05-21 | 中国石油化工股份有限公司 | Thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
| CN110454129A (en) * | 2019-08-08 | 2019-11-15 | 中国石油天然气股份有限公司 | Gas well separate-layer fracturing and water control integrated process pipe column |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089335A (en) * | 1998-12-16 | 2000-07-18 | Boart Longyear International Holdings, Inc. | Positive latch core barrel apparatus |
| CN102011561A (en) * | 2010-11-20 | 2011-04-13 | 中国石油集团西部钻探工程有限公司 | Multi-stage fracturing hole-closing tool |
| CN202325434U (en) * | 2011-09-15 | 2012-07-11 | 西南石油大学 | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube |
| CN203050626U (en) * | 2013-01-16 | 2013-07-10 | 中国石油大学(华东) | Novel closable fracture sliding sleeve assembly |
| CN204357408U (en) * | 2014-12-09 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司 | Casing sliding sleeve closing tool |
-
2014
- 2014-12-09 CN CN201410745007.6A patent/CN104481491A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089335A (en) * | 1998-12-16 | 2000-07-18 | Boart Longyear International Holdings, Inc. | Positive latch core barrel apparatus |
| CN102011561A (en) * | 2010-11-20 | 2011-04-13 | 中国石油集团西部钻探工程有限公司 | Multi-stage fracturing hole-closing tool |
| CN202325434U (en) * | 2011-09-15 | 2012-07-11 | 西南石油大学 | Closable balancing sieve tube for horizontal wells and closing tool for closable balancing sieve tube |
| CN203050626U (en) * | 2013-01-16 | 2013-07-10 | 中国石油大学(华东) | Novel closable fracture sliding sleeve assembly |
| CN204357408U (en) * | 2014-12-09 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司 | Casing sliding sleeve closing tool |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN109779588A (en) * | 2017-11-10 | 2019-05-21 | 中国石油化工股份有限公司 | Thermal production well steam injection, lost circulation prevention anti-flushing well and production integration tubing string |
| CN109779588B (en) * | 2017-11-10 | 2023-06-16 | 中国石油化工股份有限公司 | Steam injection, leakage-proof back flushing and production integrated tubular column for thermal production well |
| CN110145292A (en) * | 2019-05-18 | 2019-08-20 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
| CN110145292B (en) * | 2019-05-18 | 2022-03-08 | 中国石油天然气股份有限公司 | Elastic lock sleeve sand blower |
| CN110454129A (en) * | 2019-08-08 | 2019-11-15 | 中国石油天然气股份有限公司 | Gas well separate-layer fracturing and water control integrated process pipe column |
| CN110454129B (en) * | 2019-08-08 | 2022-03-01 | 中国石油天然气股份有限公司 | Gas well separate-layer fracturing and water control integrated process pipe column |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201031662Y (en) | Down-hole controllable type boring tool by-pass valve | |
| CN110094191A (en) | A kind of thermal production well fragment-force injection-production column jacket and method | |
| CN107060702B (en) | Coupling type downhole choke | |
| CN203081411U (en) | Anti-corrosion anti-scale and gas lift integrated well completion pipe string | |
| CN104481491A (en) | Circulation control type casing sliding sleeve closing tool | |
| CN109296348B (en) | Toe end sliding sleeve capable of being opened in time delay mode | |
| CN104612944B (en) | A kind of thick oil pump | |
| CN104563872B (en) | Blockage resisting self-filling-type float collar | |
| CN104806196A (en) | Casing floating system for horizontal well | |
| CN106014343A (en) | Separated injecting and separated mining thickened oil pump | |
| CN204357408U (en) | Casing sliding sleeve closing tool | |
| CN104343413A (en) | Top well cementation method and device for self-communicated double-process screen pipe | |
| CN204457709U (en) | A kind of Thickened oil injection-production integrated pipe column | |
| CN202325378U (en) | Down-hole isolation device | |
| CN105587286B (en) | Lost circulation prevention flushing packer | |
| CN104948147A (en) | Flow distribution device, viscous oil viscosity reduction exploitation system and heavy oil viscosity reduction exploitation method | |
| CN203239310U (en) | Sleeve sliding sleeve without limited segment fracturing | |
| CN205532511U (en) | Oil well pumping unit | |
| CN107542422A (en) | The milling method and combined type junk mill and application method of different hole diameters | |
| CN204492783U (en) | A kind of well cementation fracturing technology tubing string | |
| CN204357412U (en) | Casing sliding sleeve capable of being repeatedly closed | |
| CN203412545U (en) | Self-communicating type double-process screen pipe top well cementation device | |
| CN105089554A (en) | Oil field horizontal well pressurized dragging fracturing reconstruction operation valve and reverse well-flushing unfreezing method | |
| CN203603835U (en) | Underground dart-type blocking tool used for coiled tubing | |
| CN104481454B (en) | Sliding sleeve structure for permanent well completion and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |