CN202431261U - Oil field horizontal well multi-section press cracking slide sleeve and opening tool - Google Patents
Oil field horizontal well multi-section press cracking slide sleeve and opening tool Download PDFInfo
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- CN202431261U CN202431261U CN2011203801164U CN201120380116U CN202431261U CN 202431261 U CN202431261 U CN 202431261U CN 2011203801164 U CN2011203801164 U CN 2011203801164U CN 201120380116 U CN201120380116 U CN 201120380116U CN 202431261 U CN202431261 U CN 202431261U
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- urceolus
- sliding sleeve
- leather cup
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Abstract
The utility model discloses an oil field horizontal well multi-section press cracking slide sleeve and an opening tool. The oil field horizontal well multi-section press cracking slide sleeve is structurally characterized in that an inner slide pipe is arranged inside an outer tube, an upper sealing ring and a lower sealing ring are sheathed on the outer peripheral wall of the inner slide pipe, a side through hole and a screw hole are arranged on the outer tube, a shear pin groove is arranged on the inner slide pipe, an annular embedding groove is arranged in the inner slide pipe, the upper end of the embedding groove is provided with a conical surface, the lower end of the embedding groove is provided with a flat straight surface, the lower part of the inner slide pipe is provided with an elastic clamp claw, reverse teeth are arranged on the clamp claw, the lower end of the outer tube is provided with a lower joint, and ratchets engaged with the reverse teeth are arranged in the lower joint. The oil field horizontal well multi-section press cracking slide sleeve and the opening tool have the advantages that the use stage of the slide sleeve can be increased, and the multi-stage press cracking can be more conveniently carried out.
Description
Technical field
The utility model relates to and in the oil field prospecting development process, is used for sliding sleeve that horizontal well multistage pressure break, acidifying or abrasive perforating use and the opening device that matches and use with it, particularly a kind of oilfield horizontal well multistage pressure break sliding sleeve and opener.
Background technology
Often to carry out pressure break, acidizing treatment in the oilfield explorating developing process,, reach the purpose that improves output to improve near the gas channel the pit shaft to the stratum of having penetrated out.Horizontal well multistage (layer) fracturing process commonly used is with several packer+oil pipes, and horizontal well is divided into plurality of sections, and a sliding sleeve is placed at every section middle part; During pressure break; At first bottom one section sliding sleeve is opened and pressure break next section, and then the sliding sleeve of its preceding paragraph is opened (opening the oil pipe passage that will need when side opening that sliding sleeve one is about to sliding sleeve will open below this sliding sleeve block), carry out pressure break second section; So, but the pressure break plurality of sections.
At present; Pressure break sliding sleeve commonly used is as shown in Figure 5; Mainly form by urceolus 25, ○Xing Mifengquan 26, inner sliding pipe 27, shear pin 28 and lower contact 29; Side opening on the urceolus 25 is by inner sliding pipe 27 and be sleeved on ○Xing Mifengquan 26 sealing on the inner sliding pipe 27, and urceolus 25 and inner sliding pipe 27 are fixed together through shear pin, and the front end of inner sliding pipe 27 is provided with an inner conical surface.In oil pipe, drop into one piece of steel ball or baton round in the time of need opening sliding sleeve, when ball fell into or be pumped on the inner conical surface of inner sliding pipe 27, ball formed with inner sliding pipe 27 conical surfaces and seals; In oil pipe, suppressing (pumping liquid) oil pipe internal pressure again will raise, and when pressure rose to the numerical value of a certain setting, the shear pin of affixed inner sliding pipe 27 was cut off; Slip pipe comes downwards to the position (lower contact inner face place) of qualification; Side opening on the urceolus 25 is opened, and oil pipe is inner to be communicated with annular space through side opening, and the oil pipe passage below the sliding sleeve is blocked by steel ball or baton round; At this moment, just can this corresponding section of this sliding sleeve of pressure break.
This sliding sleeve can only by the internal diameter that dwindles sliding sleeve (inner sliding pipe) step by step (promptly more by under its corresponding sliding sleeve internal diameter of interval more little) method pressure break multistage; Its diameter of steel ball that is used to open each sliding sleeve is then than the big several millimeters of internal diameter of corresponding sliding sleeve; And the internal diameter of each sliding sleeve is bigger several millimeters than the steel ball size of opening the next stage sliding sleeve again, because the restriction of the used tubing size of pressure break, the hop count of pressure break (or progression) is very limited; Be difficult to carry out the multistage pressure break; And along with the continuous progress of horizontal well drilling technology, the horizontal segment of institute's horizontal well drilling is more and more longer, and people hope horizontal segment is divided into the section of greater number; The section of greater number is carried out staged fracturing, acidifying transformation with raising output, and above-mentioned existing sliding sleeve can not satisfy the demand.
The utility model content
The purpose of the utility model is to provide a kind of oilfield horizontal well multistage pressure break sliding sleeve, how many levels (individual) that don't work, and its internal diameter is all the same, does not have undergauge (sliding sleeve internal diameter is more by more little down) problem, can increase sliding sleeve and use progression, is convenient to carry out the multistage pressure break more.
The purpose of the utility model is achieved in that a kind of oilfield horizontal well multistage pressure break sliding sleeve, comprises the urceolus of tubulose, and urceolus upper end is provided with box thread and its lower end is provided with male thread; Barrel is being provided with several side through hole on urceolus top, and inner sliding pipe is being set in urceolus, sealing ring, lower seal at suit on the inner sliding pipe periphery wall; Side through hole is between last sealing ring and lower seal; Inner sliding pipe tube wall between last sealing ring and the lower seal is provided with a shear pin groove, the corresponding screw that shear pin is installed that is being provided with on the urceolus barrel, and inner sliding pipe and urceolus are through the shear pin Joint; The middle part tube wall has the caulking groove of annular in the inner sliding pipe; The upper end of caulking groove is provided with conical surface and its lower end is provided with and the perpendicular flat surface of urceolus central axis, and the inner sliding pipe bottom is provided with flexible claw, and the claw external surface is being provided with pawl; The urceolus lower end is being equipped with lower contact; Lower contact upper end is provided with a box thread and its lower end is provided with a male thread, and urceolus is connected through male thread that is provided with in its lower end and the box thread that the lower contact upper end is provided with, and on the interior middle part tube wall of lower contact the ratchet that is meshed with pawl is being set.
Another purpose of the utility model provides a kind of opener that is used with oilfield horizontal well multistage pressure break sliding sleeve; It designs unique; In oil pipe, have unidirectional mobility (before the embedding watt embedding caulking groove) and one-way sealing property (after the embedding watt embedding caulking groove); Can be pumped in the sliding sleeve, higher fluid pressure and block the oil pipe passage below the sliding sleeve in the time of bearing pressure break is prone to salvage.
The purpose of the utility model is achieved in that a kind of opener that is used with oilfield horizontal well multistage pressure break sliding sleeve; Be uniformly distributed with four grooves on the axial periphery wall at mandrel middle part, the first compression spring all is being set in groove, spiral-lock embedding watt on the first compression spring; The two ends of embedding watt have positioning boss respectively; Be equipped with embedding watt gland, following embedding watt gland on the mandrel respectively through screw thread, embedding is watt between last embedding watt gland and following embedding watt gland, and the positioning boss that is positioned at embedding watt two ends snaps in the end of embedding watt gland and following embedding watt gland respectively; Distance between two symmetrical embedding watt its end faces is greater than last embedding watt gland and following embedding watt gland external diameter separately; An embedding watt upper end is provided with conical surface and its lower end is provided with and the perpendicular flat surface of mandrel central axis, and the caulking groove that the middle part is provided with in embedding watt and the inner sliding pipe matches, and the mandrel center is provided with a central through hole; The mandrel upper end is connected with the leather cup pressure cap through screw thread; Suit first sealing ring and leather cup on the periphery wall of leather cup pressure cap middle part, and steel disc and steel loop with vulcanization of rubber distinguish together are being set in leather cup, and steel disc welds together mutually with steel loop and constitutes leather cup muscles and bones jointly; Leather cup pressure cap center also is provided with a central through hole; Mandrel is equipped mutually with the pressure balancing stem of band fishing head, and the opening of leather cup is toward the upper end of pressure balancing stem, and the pressure balancing stem top body of rod slightly forms thick bar and its underpart body of rod and carefully forms thin bar; Rectangular seal at suit on the straight shoulder that is provided with between thick bar and the thin bar; Thin bar passes leather cup pressure cap and mandrel central through hole separately, and thin bar bottom suit the second compression spring, and the spring pressure cap that this second compression spring is installed on the thin bar through screw thread is compressed between spring pressure cap upper surface and the mandrel lower surface.
When using the utility model, earlier with in the pressure break sliding sleeve lower going-into-well, in the time of need opening sliding sleeve; Opener is dropped in the well (in the oil pipe) and with pump truck it is pumped to the sliding sleeve place, and when opener ran to sliding sleeve inner sliding pipe middle part, embedding watt was opened and just to be snapped in the caulking groove; Continuation is pumping liquid in oil pipe, and leather cup can be close to tube inner wall, and opener is in the one-way sealing state; Fluid pressure can raise rapidly in the oil pipe, and the embedding of pressure through opener watt acts on the sliding sleeve, when pressure reaches a certain numerical value; The shear pin of affixed sliding sleeve urceolus and inner sliding pipe is cut off; Inner sliding pipe comes downwards to and limits the position, and meanwhile the elastic card claw of inner sliding pipe lower end is beated on the ratchet of lower contact inwall descending (pawl of claw external surface setting and the ratchet of lower contact inwall are meshing with each other), and sliding sleeve promptly is opened.
In sum; Its technique effect of oilfield horizontal well multistage pressure break sliding sleeve of the utility model is: because how many levels (individual) that don't work; Its internal diameter is all the same; Do not have undergauge (sliding sleeve internal diameter is more by more little down) problem, change the length of caulking groove, then can reach easily increases the purpose that sliding sleeve uses progression (multistage pressure break); Its technique effect of special opening instrument that is used with oilfield horizontal well multistage pressure break sliding sleeve of the utility model is: this opener has unidirectional mobility (embedding watt embed before the caulking groove) and one-way sealing property (embedding watt embed after the caulking groove) in oil pipe; Therefore; Can be pumped in the sliding sleeve, after the embedding of opener watt embedded the caulking groove of sliding sleeve, opener was no longer descending but bear fluid pressure to open sliding sleeve; After sliding sleeve is opened; Opener higher fluid pressure and block the oil pipe passage below the sliding sleeve in the time of can also bearing pressure break, after pressure break finished, opener also was easy to salvaged.
Description of drawings
To combine accompanying drawing that the utility model is described further below.
Fig. 1 looks the semi-section structural representation for the master of the utility model oilfield horizontal well multistage pressure break sliding sleeve initial closed state;
Fig. 2 looks the semi-section structural representation for the master of the utility model opener;
Fig. 3 looks the semi-section structural representation for the master that the utility model oilfield horizontal well multistage pressure break sliding sleeve is in open mode;
Fig. 4 is that the duty master that the utility model opener and oilfield horizontal well multistage pressure break sliding sleeve are used looks semi-section structural representation (being to open in the embedding watt embedding inner sliding pipe annular caulking groove and with sliding sleeve):
Fig. 5 is the semi-section structural representation (statement: the expressed content of this figure is a prior art, does not belong to the technical pattern characteristic of the utility model) of existing pressure break sliding sleeve.
The specific embodiment
A kind of oilfield horizontal well multistage pressure break sliding sleeve, as shown in Figure 1, comprise the urceolus 1 of tubulose; Urceolus 1 upper end is provided with box thread and its lower end is provided with male thread, at urceolus 1 top barrel several side through hole 4 is being set, and inner sliding pipe 3 is being set in urceolus 1; Suit sealing ring 2, lower seal 6 on inner sliding pipe 3 periphery walls, and side through hole 4 is between last sealing ring 2 and lower seal 6, and inner sliding pipe 3 tube walls between last sealing ring 2 and the lower seal 6 are provided with a shear pin groove; The corresponding screw that shear pin 5 is installed that is being provided with on urceolus 1 barrel, inner sliding pipe 3 passes through shear pin 5 Joints with urceolus 1, and the middle part tube walls have the caulking groove 7 of annular in the inner sliding pipe 3; The upper end of caulking groove 7 is provided with conical surface and its lower end is provided with and the perpendicular flat surface of urceolus 1 central axis, and inner sliding pipe 3 bottoms are provided with flexible claw 8, and claw 8 external surfaces are being provided with pawl; Urceolus 1 lower end is being equipped with lower contact 9; Lower contact 9 upper ends are provided with a box thread and its lower end is provided with a male thread, and urceolus 1 is connected through male thread that is provided with in its lower end and the box thread that lower contact 9 upper ends are provided with, and on the interior middle part tube wall of lower contact 9 ratchet 10 that is meshed with pawl are being set; When sliding sleeve is opened; Pawl and ratchet are meshing with each other, and prevent that sliding sleeve is closed once more, and the upper and lower screw thread of sliding sleeve can be connected with oil pipe.
A kind of opener that is used with oilfield horizontal well multistage pressure break sliding sleeve; As shown in Figure 2; Be uniformly distributed with four grooves on the axial periphery wall at mandrel 18 middle parts, the first compression spring 20 all is being set in groove, spiral-lock embedding watts 21 on the first compression spring 20; The two ends of embedding watts 21 have positioning boss respectively; Be equipped with embedding watt gland 19, following embedding watt gland 22 on the mandrel 18 respectively through screw thread, embedding watts 21 is between last embedding watt gland 19 and following embedding watt gland 22, and the positioning boss that is positioned at embedding watt 21 two ends snaps in the end of embedding watt gland 19 and following embedding watt gland 22 respectively; Distance between two symmetrical embedding watt 21 its end faces is greater than last embedding watt gland 19 and following embedding watt gland 22 external diameter separately; Embedding watt 21 upper ends are provided with conical surface and its lower end is provided with and the perpendicular flat surface of mandrel 18 central axis, and the caulking groove 7 that the middle part is provided with in embedding watts 21 and the inner sliding pipe 3 matches, and mandrel 18 centers are provided with a central through hole; Mandrel 18 upper ends are connected with leather cup pressure cap 13 through screw thread; Suit first sealing ring 17 and leather cup 14 on the leather cup pressure cap 13 middle part periphery walls, and steel disc 15 and steel loop 16 with vulcanization of rubber distinguish together are being set in leather cup 14, and steel disc 15 welds together mutually with steel loop 16 and constitutes leather cup muscles and bones jointly; Leather cup pressure cap 13 centers also are provided with a central through hole; Mandrel 18 is equipped mutually with the pressure balancing stem 11 of band fishing head, and the opening of leather cup 14 is toward the upper end of pressure balancing stem 11, and the pressure balancing stem 11 top bodies of rod slightly form thick bar and its underpart body of rod and carefully form thin bar; Rectangular seal 12 at suit on the straight shoulder that is provided with between thick bar and the thin bar; Thin bar passes leather cup pressure cap 13 and mandrel 18 central through hole separately, and thin bar bottom suit the second compression spring 23, and the spring pressure cap 24 that this second compression spring 23 is installed on the thin bar through screw thread is compressed between spring pressure cap 24 upper surfaces and mandrel 18 lower surfaces.
The thick bar that is positioned at pressure balancing stem 11 tops is cylindrical bar with the thin bar that is positioned at its underpart, and rectangular seal 12 upper surfaces offset with thick bar lower surface, and leather cup pressure cap 13 upper surfaces are close in rectangular seal 12 lower surfaces.
Method of work of the utility model and operating principle:
A plurality of length that are in closed condition pressure break sliding sleeve (as shown in Figure 1) according to inner sliding pipe annular caulking groove; Arrangement is gone into the well in proper order; Caulking groove is grown and more is leaned on the tubing string lower end, and each sliding sleeve and oil pipe and hydraulic packer connect into well by working design, and tubing string is provided with a ball-and-seat bottom.
(opening nethermost (first) pressure break sliding sleeve) drops in oil pipe and the corresponding opener (as shown in Figure 2) of next stage sliding sleeve, with pump truck this opener is pumped to the target sliding sleeve then.Because under forward (from the top down) pressure effect; Leather cup is adjacent to tube inner wall; Rectangular seal is with the clearance seal between pressure balancing stem and the leather cup pressure cap, and whole opener forms the stopper of a sealing, and this opener also just is easy to be pumped to the target sliding sleeve.
When the sliding sleeve before the opener process target sliding sleeve, owing to the length of embedding watt length greater than the annular caulking groove on each sliding sleeve inner sliding pipe, so it can not fall in the caulking groove of other sliding sleeve.
When opener moves to target sliding sleeve inner sliding pipe middle part; The supporting with it caulking groove of embedding watt entering, embedding watt is opened (generation radial motion) under the effect of the first compression spring, so that be embedded in the caulking groove; Because the lower end of annular caulking groove is a flat surface; The lower end of embedding watt also is a flat surface, and therefore, opener is with regard to being stuck in the caulking groove and can not continue descending.
At this moment, continue pump liquid in oil pipe, the fluid pressure in the oil pipe will constantly rise, and these pressure act on leather cup, the pressure balancing stem, watt passes to inner sliding pipe through mandrel and embedding.When pressure was elevated to certain numerical value, the hydraulic packer on the tubing string is the seat envelope at first, when pressure rises to another higher numerical value; Fixedly the shear pin of inner sliding pipe and urceolus will be cut off; Inner sliding pipe comes downwards to position shown in Figure 3, in the sliding sleeve side opening is opened, can carry out pressure break to first section; In sliding sleeve was opened back and whole fracturing process thereof, the mechanism that sliding sleeve and opener match was then as shown in Figure 4.
After first section pressure break finishes, in oil pipe, drop into and second section opener that sliding sleeve is used again, use with above-mentioned same method and open second sliding sleeve and carry out pressure break to second section, so back and forth, finish until the whole pressure breaks of the interval that will intend pressure break.
At last, fracturing string is all proposed, descend completion tubular column again, perhaps salvage one by one with the coiled tubing of end band fishing tool or little oil pipe or the hollow rod opener that each sliding sleeve is corresponding.When fishing tool catch opener fishing head and on when carrying fishing head; Only just can make and be sleeved on second on the pressure balancing stem and compress spring and further compress with very little power; Rectangular seal leaves leather cup pressure cap upper surface; Just with leather cup fluid communication up and down, make the upper and lower pressure balance of leather cup in the thin bar of pressure balancing stem bottom and the gap between leather cup pressure cap and the mandrel central through hole, be convenient to salvage opener.Construction finishes, and oil well can put into production.
Claims (3)
1. oilfield horizontal well multistage pressure break sliding sleeve; Comprise the urceolus (1) of tubulose, it is characterized in that: urceolus (1) upper end is provided with box thread and its lower end is provided with male thread, and barrel is being provided with several side through hole (4) on urceolus (1) top; Inner sliding pipe (3) is being set in urceolus (1); Suit sealing ring (2), lower seal (6) on inner sliding pipe (3) periphery wall, and side through hole (4) is positioned between sealing ring (2) and the lower seal (6), and inner sliding pipe (3) tube wall that is positioned between sealing ring (2) and the lower seal (6) is provided with a shear pin groove; Correspondence is being provided with the screw of installation shear pin (5) on urceolus (1) barrel; Inner sliding pipe (3) and urceolus (1) are through shear pin (5) Joint, and the middle part tube wall has the caulking groove (7) of annular in the inner sliding pipe (3), and the upper end of caulking groove (7) is provided with conical surface and its lower end is provided with and the perpendicular flat surface of urceolus (1) central axis; Inner sliding pipe (3) bottom is provided with flexible claw (8); Claw (8) external surface is being provided with pawl, and urceolus (1) lower end is being equipped with lower contact (9), and lower contact (9) upper end is provided with a box thread and its lower end is provided with a male thread; Urceolus (1) is connected through the box thread that male thread and lower contact (9) upper end in its lower end setting are provided with, and on the middle part tube wall in the lower contact (9) ratchet (10) that is meshed with pawl is being set.
2. opener that is used with oilfield horizontal well multistage pressure break sliding sleeve as claimed in claim 1; It is characterized in that: be uniformly distributed with four grooves on the axial periphery wall at mandrel (18) middle part; The first compression spring (20) all is being set in groove; Go up spiral-lock at the first compression spring (20) and embedding watt (21); The two ends of embedding watt (21) have positioning boss respectively; On mandrel (18), be equipped with through screw thread respectively and going up embedding watt gland (19), following embedding watt gland (22), embedding watt (21) is positioned between embedding watt gland (19) and the following embedding watt gland (22), and the positioning boss that is positioned at embedding watt (21) two ends snaps in the end of embedding watt gland (19) and following embedding watt gland (22) respectively; Distance between two symmetrical embedding watt (21) its end faces is greater than last embedding watt gland (19) and following embedding watt gland (22) external diameter separately; Embedding watt (21) upper end is provided with conical surface and its lower end is provided with and the perpendicular flat surface of mandrel (18) central axis, and embedding watt (21) matches with the caulking groove (7) of middle part setting in the inner sliding pipe (3), and mandrel (18) center is provided with a central through hole; Mandrel (18) upper end is connected with leather cup pressure cap (13) through screw thread; Suit first sealing ring (17) and leather cup (14) on the periphery wall of leather cup pressure cap (13) middle part, and steel disc (15) and steel loop (16) with vulcanization of rubber distinguish together are being set in leather cup (14), and steel disc (15) welds together mutually with steel loop (16) and constitutes leather cup muscles and bones jointly; Leather cup pressure cap (13) center also is provided with a central through hole; Mandrel (18) is equipped mutually with the pressure balancing stem (11) of band fishing head, and the opening of leather cup (14) is toward the upper end of pressure balancing stem (11), and pressure balancing stem (11) the top body of rod slightly forms thick bar and its underpart body of rod and carefully forms thin bar; Rectangular seal (12) at suit on the straight shoulder that is provided with between thick bar and the thin bar; Thin bar passes leather cup pressure cap (13) and mandrel (18) central through hole separately, and thin bar bottom suit the second compression spring (23), and the spring pressure cap (24) that this second compression spring (23) is installed on the thin bar through screw thread is compressed between spring pressure cap (24) upper surface and mandrel (18) lower surface.
3. the opener that is used with oilfield horizontal well multistage pressure break sliding sleeve according to claim 2; It is characterized in that: the thick bar that is positioned at pressure balancing stem (11) top is cylindrical bar with the thin bar that is positioned at its underpart; Rectangular seal (12) upper surface offsets with thick bar lower surface, and leather cup pressure cap (13) upper surface is close in rectangular seal (12) lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203801164U CN202431261U (en) | 2011-10-03 | 2011-10-03 | Oil field horizontal well multi-section press cracking slide sleeve and opening tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203801164U CN202431261U (en) | 2011-10-03 | 2011-10-03 | Oil field horizontal well multi-section press cracking slide sleeve and opening tool |
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| Publication Number | Publication Date |
|---|---|
| CN202431261U true CN202431261U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203801164U Expired - Fee Related CN202431261U (en) | 2011-10-03 | 2011-10-03 | Oil field horizontal well multi-section press cracking slide sleeve and opening tool |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103032058A (en) * | 2011-10-03 | 2013-04-10 | 克拉玛依特隆油田技术服务有限责任公司 | Horizontal multi-stage fracturing sliding sleeve of an oil field and opening tool |
| CN103573241A (en) * | 2013-08-06 | 2014-02-12 | 中国石油天然气股份有限公司 | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well |
| CN103775047A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Sliding sleeve opening and closing device |
| CN104047571A (en) * | 2013-03-14 | 2014-09-17 | 深圳市百勤石油技术有限公司 | Input type staged fracturing sliding sleeve switch controller and use method thereof |
| CN104790910A (en) * | 2015-05-06 | 2015-07-22 | 克拉玛依特隆石油技术有限公司 | Oil field hydraulic control multi-switching circulating valve and opening and closing tools |
| CN105164365A (en) * | 2013-09-20 | 2015-12-16 | 弗洛泊威尔技术公司 | System and method for controlling flow in a pipe using a finger valve |
| CN105822256A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Hinged type sliding sleeve opening tools capable of achieving staged opening and equal-diameter casing pipe sliding sleeves |
| CN105822278A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Equal-drift-diameter staged fracturing device and method |
| CN106640014A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Counting type infinite class multi cluster full path sectional fracturing slip sleeve |
| CN110984912A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Fracturing construction process utilizing infinite grading full-bore fracturing sliding sleeve assembly system |
| CN110905448B (en) * | 2019-12-23 | 2024-04-30 | 中国石油集团川庆钻探工程有限公司 | Infinite grading full-drift-diameter fracturing sliding sleeve assembly system |
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2011
- 2011-10-03 CN CN2011203801164U patent/CN202431261U/en not_active Expired - Fee Related
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| CN103032058A (en) * | 2011-10-03 | 2013-04-10 | 克拉玛依特隆油田技术服务有限责任公司 | Horizontal multi-stage fracturing sliding sleeve of an oil field and opening tool |
| CN103775047B (en) * | 2012-10-25 | 2016-03-02 | 中国石油化工股份有限公司 | Sliding sleeve switch device |
| CN103775047A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Sliding sleeve opening and closing device |
| CN104047571A (en) * | 2013-03-14 | 2014-09-17 | 深圳市百勤石油技术有限公司 | Input type staged fracturing sliding sleeve switch controller and use method thereof |
| CN104047571B (en) * | 2013-03-14 | 2016-07-20 | 深圳市百勤石油技术有限公司 | Throw-in type staged fracturing sliding sleeve switch controller and using method thereof |
| CN103573241A (en) * | 2013-08-06 | 2014-02-12 | 中国石油天然气股份有限公司 | Casing cementing pressure balancing sliding sleeve annulus staged sand fracturing process for horizontal well |
| CN105164365A (en) * | 2013-09-20 | 2015-12-16 | 弗洛泊威尔技术公司 | System and method for controlling flow in a pipe using a finger valve |
| CN104790910A (en) * | 2015-05-06 | 2015-07-22 | 克拉玛依特隆石油技术有限公司 | Oil field hydraulic control multi-switching circulating valve and opening and closing tools |
| CN104790910B (en) * | 2015-05-06 | 2017-08-25 | 克拉玛依特隆石油技术有限公司 | Oil field hydraulic controls multiple switching circulating valve and unlatching, closes instrument |
| CN106640014A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Counting type infinite class multi cluster full path sectional fracturing slip sleeve |
| CN105822256A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Hinged type sliding sleeve opening tools capable of achieving staged opening and equal-diameter casing pipe sliding sleeves |
| CN105822278A (en) * | 2016-05-20 | 2016-08-03 | 中石化石油工程技术服务有限公司 | Equal-drift-diameter staged fracturing device and method |
| CN110984912A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Fracturing construction process utilizing infinite grading full-bore fracturing sliding sleeve assembly system |
| CN110905448B (en) * | 2019-12-23 | 2024-04-30 | 中国石油集团川庆钻探工程有限公司 | Infinite grading full-drift-diameter fracturing sliding sleeve assembly system |
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Granted publication date: 20120912 Termination date: 20201003 |