CN105672941A - Degradable drilling-free bridge plug fracturing process - Google Patents
Degradable drilling-free bridge plug fracturing process Download PDFInfo
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- CN105672941A CN105672941A CN201610072091.9A CN201610072091A CN105672941A CN 105672941 A CN105672941 A CN 105672941A CN 201610072091 A CN201610072091 A CN 201610072091A CN 105672941 A CN105672941 A CN 105672941A
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- degradable
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- packing element
- bridging plug
- bridge plug
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title abstract description 8
- 239000008151 electrolyte solution Substances 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000012856 packing Methods 0.000 claims description 29
- 238000005516 engineering process Methods 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 238000006065 biodegradation reaction Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 6
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000002210 silicon-based material Substances 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007857 degradation product Substances 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 229920000747 poly(lactic acid) Polymers 0.000 description 4
- 239000004626 polylactic acid Substances 0.000 description 4
- 229920000954 Polyglycolide Polymers 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- TYBWABJIIOVYOR-UHFFFAOYSA-N OCC(C(O)=O)OP(=O)=O Chemical compound OCC(C(O)=O)OP(=O)=O TYBWABJIIOVYOR-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000004633 polyglycolic acid Substances 0.000 description 1
- 229950008885 polyglycolic acid Drugs 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
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 relates to the technical field of oil and gas field fracturing, and in particular to a degradable drilling-free bridge plug fracturing process of which a tube column consists of a cable, a weight bar, a CCL magnetic position indicator, an ignition head, a perforating gun, a primary ignition head, a cable seat seal tool and a degradable drilling-free bridge plug which are connected in sequence from top to bottom. According to the degradable drilling-free bridge plug fracturing process, after fracturing of all sections is completed by using the tube column, a specific electrolyte solution is filled, a bridge plug at a lower part can be degraded only if the part between a degradable ball and a central tube ball seat is degraded from top to bottom, after the components are sufficiently degraded, a well head can be broken through after degraded residues are ejected out, and a production tube column can be fed for production. When being compared with a rapid drilling type fracturing method, the degradable drilling-free bridge plug fracturing process is high in safety coefficient and is relatively safe, is free of drilling and high in efficiency as the bridge plug can be unblocked only by filling the specific electrolyte solution after fracturing construction is completed, and is beneficial to later transformation of a well as degradation products can be ejected out.
Description
Technical field
The present invention relates to oil-gas field fracturing technical field, specifically a kind of degradable exempts to bore bridging plug fracturing technology.
Background technology
Along with conventional gas and oil resource slow consumption, unconventional petroleum resources slowly substitutes conventional gas and oil resource, and fine and close shale gas and coal bed gas etc. are just progressively exploited, and unconventional petroleum resources rich reserves. But the low hole of unconventional petroleum resources, the feature of hypotonicity limits general conventional gas and oil recovery method, what replace is open hole packer staged fracturing technology, coiled tubing abrasive perforating annular space Sand Fracturing Technology and rapid drilling type composite bridge plug staged fracturing technology, and rapid drilling type composite bridge plug staged fracturing technology is current most common technology, the method is theoretically does not limit lamination to split, first perforating and fracturing first paragraph, use bridge plugging ground floor afterwards, carry out second time perforating and fracturing again on bridging plug top, to the last the whole pressure break of all numbers of plies completes. The fast bridging plug that bores is required higher by this technique, if hanging tag, cable will rupture, and causes the accident, and additionally needs to use Operation Tubing Aggregate and carries out boring milling, and cost is high and dangerous, and limiting factor is more.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, a kind of degradable is provided to exempt to bore bridging plug fracturing technology, its safety coefficient is higher than rapid drilling type fracturing process, safer, treat only to inject special electrolytic solutions after pressing crack construction, bridging plug will deblocking, exempt to bore efficiently, utilize open flow can get rid of degradation product, it is simple to the subsequent adaptation of well.
For realizing above-mentioned technical purpose, scheme provided by the invention is: a kind of degradable exempts to bore bridging plug fracturing technology, the tubing string of this technique passes sequentially through cable from top to bottom, weighted lever, CCL magnetic orientator, igniter head, perforating gun, one-level igniter head, cable setting tool, degradable is exempted to bore bridging plug and is connected into, described degradable is exempted to bore bridging plug and is included central canal, guide shoe, slips assembly, lower cone, inside and outside back band assembly, end packing element, middle packing element, upper cone, slips stop ring and pressure break ball, described central canal, slips stop ring, upper cone, lower cone, pressure break ball, card tile is all by including magnesium, copper, zinc, aluminum, the speciality AZ31B magnesium alloy materials of silicon materials synthesis is made, its constituent includes, aluminum 2.5%～3%, silicon 0.1%, zinc 0.6%～1.4%, ferrum 0.005%, manganese 0.2%～1%, copper 0.05%, zinc-nickel 0.005%, step is as follows.
1) first paragraph by under cable connection point duration and degree of heating perforating gun to the predetermined area, after completing perforation, trip out tubing string.
2) sleeve pipe sand fracturing is directly used.
3) second segment is gone into the well with this tubing string and first paragraph is blocked up temporarily behind the predetermined area, exempts from degradable to bore after bridging plug completes to set and gives up, above mentions perforating site perforating job, after to be done, remaining pipe is strung out well head.
4) sleeve pipe sand fracturing is directly utilized.
5) step 2 is repeated)-4) until completing the pressure break of all sections.
6) special electrolytic solutions is injected, from top to bottom, as long as decomposing between degraded ball and central canal ball seat, solution just can start following bridging plug of degrading, and this process has only to wait, compared with this process safety of continuous oil pipe tool, do not affected by well depth, after fully degraded, the remnants decomposed by open flow just can get rid of well head, more lower flow string puts into production.
And, described inside and outside back band assembly includes two pairs of interior back bands cooperated and outer back band, interior back band and outer back band are all made up of the aluminium bronze mixing biodegradation raw material, and its constituent includes, aluminum 8.5%～9.5%, copper 87%～88%, biodegradation base 3.5%～4.5%.
And, described end packing element is divided into upper and lower two, and its packing element hardness is 90 degree, and the packing element hardness of middle packing element is 70 degree, they constitute the packing element combination of 90-70-90 degree, and end packing element and middle packing element are glycerol and the synthesis of sebacic acid molten copolycondensation of mixing degraded base.
And, described tubing string can suitably increase igniter head and perforating gun according to the length of perforated interval, but total length can not more than cable blowout control length of tube.
The beneficial effects of the present invention is: exempt to bore bridging plug with degradable and replace boring bridging plug soon, reduce construction risk, improve work efficiency, it is simple to its Late reformation.
Accompanying drawing explanation
Fig. 1 is that degradable exempts to bore bridging plug fracturing technology ground floor fracturing string.
Fig. 2 is that degradable exempts to bore bridging plug fracturing technology second layer fracturing string.
Fig. 3 is that degradable exempts to bore after bridging plug fracturing technology ground floor perforation and pressure break figure.
Fig. 4 is that degradable exempts to bore bridging plug fracturing technology second layer perforating and fracturing construction drawing.
Wherein, 1, cable, 2, connect weighted lever, 3, CCL magnetic orientator, 4, igniter head, 5, perforating gun, 6, one-level igniter head, 7, cable setting tool, 8, degradable exempts to bore bridging plug.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The present embodiment provides a kind of degradable to exempt to bore bridging plug fracturing technology, and the tubing string of this technique passes sequentially through cable from top to bottom, weighted lever, CCL magnetic orientator, igniter head, perforating gun, one-level igniter head, cable setting tool, degradable are exempted to bore bridging plug and connected into. Described tubing string can suitably increase igniter head and perforating gun according to the length of perforated interval, but total length can not more than cable blowout control length of tube.
Above-mentioned degradable exempts to bore bridging plug, following structure can be adopted: include central canal, guide shoe, slips assembly, lower cone, inside and outside back band assembly, end packing element, middle packing element, upper cone, slips stop ring and pressure break ball, the lower end of described central canal is provided with trapezoidal thread, it is connected by trapezoidal thread with guide shoe and connects with screw thread is gluing, middle packing element has two end packing elements and the protection of inside and outside back band assembly of symmetry up and down, inside and outside back band assembly contacts with upper cone and lower cone, and upper cone and lower cone tapered one be placed in the middle of the conical surface that slips is always shaped as;Described slips assembly is included upper slips and lower slips, upper slips and lower slips and is all connected and composed by the slips ring made with carbon fiber wire by 6～10 card tiles; Described slips stop ring is placed in the top of upper slips, and contacts and spacing with central canal upper step, is fixed on central canal by shear pin; Described central canal, slips stop ring, upper cone, lower cone, pressure break ball, card tile all by include magnesium, copper, zinc, aluminum, silicon materials synthesis speciality AZ31B magnesium alloy materials make, its constituent includes, aluminum 2.5%～3%, silicon 0.1%, zinc 0.6%～1.4%, ferrum 0.005%, manganese 0.2%～1%, copper 0.05%, zinc-nickel 0.005%.
Described inside and outside back band assembly includes two pairs of interior back bands cooperated and outer back band, interior back band and outer back band are all made up of the aluminium bronze mixing biodegradation raw material, its constituent includes, aluminum 8.5%～9.5%, copper 87%～88%, biodegradation base (such as PGA or PLA) 3.5%～4.5%. PGA, i.e. polyglycolicacid, the abbreviation of C3compounds phosphoglyceric acid in photosynthesis dark reaction; PLA, i.e. polylacticacid, polylactic acid.
Described end packing element is divided into upper and lower two, and its packing element hardness is 90 degree, the packing element hardness of middle packing element is 70 degree, they constitute the packing element combination of 90-70-90 degree, and end packing element and middle packing element are glycerol and the synthesis of sebacic acid molten copolycondensation of mixing degraded base, this rubber tube can for a long time within 200 DEG C, and pressure reduction keeps good sealing property at 70MPa.
It is as follows that degradable exempts to bore bridging plug fracturing technology step.
Ground floor position perforating and fracturing.
First according to Fig. 1,1 time tip node duration and degree of heating 4 of cable, and perforating gun 5, check that whether cable is intact, entering ground floor perforation place under directly, igniting carries out perforation, such as Fig. 3, after completing Deng perforation, tubing string is tripped out, directly in sleeve pipe sand fracturing, until ground floor pressure break completes.
The second layer splits to last lamination.
(1) according to Fig. 2, cable 1 connects weighted lever 2, CCL magnetic orientator 3, igniter head 4, perforating gun 5, one-level igniter head 6, cable setting tool 7, and degradable exempts to bore bridging plug 8. Connect inspection cable etc., enter well operation, carry and can inject electrolyte solution if meeting card when cable can't resolve bridging plug is dissolved, again connecting tube string again. Time under bridging plug to the predetermined area, noticing that CCL magnetic orientator 3 avoids bridging plug at casing coupling place, one-level igniter head of lighting a fire, bridging plug sets gives up. Now, ground floor position will be blocked up by this bridging plug temporarily. Upper lifting pipe string makes perforating gun be in the second perforated interval, trigger point duration and degree of heating, carries out perforating application, such as Fig. 4.
(2) at this, if the perforated interval in well is bigger, pipe falsification can be entered between perforating gun and one-level igniter head, add a pair or two pairs of igniter head and perforating gun, carry out second time third time again light a fire perforation by lifting up, until meeting the requirement of perforated interval.
(3) after perforation completes, upper lifting pipe string goes out well head, directly in sleeve pipe sand fracturing, until second place's pressure break completes. Repeat above suddenly completing until all of layer position all pressure breaks afterwards. If bridging plug meets card in this process, can use the way injecting electrolyte solution in well that bridging plug is dissolved unfreezing. Unfreezing proposes pipe string after completing, and will wash a well, it is to avoid follow-up bridging plug is produced impact by the electrolyte solution remained in well.
After completing etc. all layer positions pressure break, special electrolytic solutions (such as KCl or NaCl) is injected in well, after the degraded of uppermost bridging plug rubber sleeve, electrolyte will flow into second bridging plug and continue degraded, a to the last bridging plug of degrading successively is degraded, the time of degraded and the quantity of bridging plug, domestic temperature, relevant with service condition.Boring milling with routine continuous oil pipe tool, the method is safer, it does not have the landform restriction to Operation Tubing Aggregate, has saved brill milling cost.
Finally by open flow, the residue degraded by bridging plug gets rid of well head, residue in well almost can all be excluded by the method, compared with boring milling method, if it is bigger to bore milling granule, the big metalwork of some density can be run into and arrange situation about not going out, so the big orifice that this technique is to keeping well is better, the Late reformation of well be had very big benefit.
Follow-up just can produce well by following flow string.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvement or deformation, these improve or deformation also should be regarded as protection scope of the present invention.
Claims (3)
1. a degradable exempts to bore bridging plug fracturing technology, the tubing string of this technique passes sequentially through cable from top to bottom, weighted lever, CCL magnetic orientator, igniter head, perforating gun, one-level igniter head, cable setting tool, degradable is exempted to bore bridging plug and is connected into, described degradable is exempted to bore bridging plug and is included central canal, guide shoe, slips assembly, lower cone, inside and outside back band assembly, end packing element, middle packing element, upper cone, slips stop ring and pressure break ball, described central canal, slips stop ring, upper cone, lower cone, pressure break ball, card tile is all by including magnesium, copper, zinc, aluminum, the speciality AZ31B magnesium alloy materials of silicon materials synthesis is made, its constituent includes, aluminum 2.5%～3%, silicon 0.1%, zinc 0.6%～1.4%, ferrum 0.005%, manganese 0.2%～1%, copper 0.05%, zinc-nickel 0.005%, step is as follows:
First paragraph by under cable connection point duration and degree of heating perforating gun to the predetermined area, after completing perforation, trip out tubing string;
Directly use sleeve pipe sand fracturing;
Second segment is gone into the well with this tubing string and first paragraph is blocked up temporarily behind the predetermined area, exempts from degradable to bore after bridging plug completes to set and gives up, above mentions perforating site perforating job, after to be done, remaining pipe is strung out well head;
Directly utilize sleeve pipe sand fracturing;
Repeat step 2)-4) until completing the pressure break of all sections;
Injecting special electrolytic solutions, from top to bottom, as long as decomposing between degraded ball and central canal ball seat, solution just can start following bridging plug of degrading, and after waiting fully degraded, the remnants decomposed by open flow just can get rid of well head, more lower flow string puts into production.
2. a kind of degradable according to claim 1 exempts to bore bridging plug fracturing technology, it is characterized in that: described inside and outside back band assembly includes two pairs of interior back bands cooperated and outer back band, interior back band and outer back band are all made up of the aluminium bronze mixing biodegradation raw material, its constituent includes, aluminum 8.5%～9.5%, copper 87%～88%, biodegradation base 3.5%～4.5%.
3. a kind of degradable according to claim 1 exempts to bore bridging plug fracturing technology, it is characterized in that: described end packing element is divided into upper and lower two, and its packing element hardness is 90 degree, the packing element hardness of middle packing element is 70 degree, they constitute the packing element combination of 90-70-90 degree, and end packing element and middle packing element are glycerol and the synthesis of sebacic acid molten copolycondensation of mixing degraded base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072091.9A CN105672941A (en) | 2016-02-02 | 2016-02-02 | Degradable drilling-free bridge plug fracturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610072091.9A CN105672941A (en) | 2016-02-02 | 2016-02-02 | Degradable drilling-free bridge plug fracturing process |
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| Publication Number | Publication Date |
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| CN105672941A true CN105672941A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610072091.9A Pending CN105672941A (en) | 2016-02-02 | 2016-02-02 | Degradable drilling-free bridge plug fracturing process |
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Cited By (7)
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| CN106639963A (en) * | 2016-12-28 | 2017-05-10 | 中国石油集团渤海钻探工程有限公司 | Degradable packer, multi-stage layering fracturing pipe column and fracturing construction method thereof |
| CN106703746A (en) * | 2016-12-19 | 2017-05-24 | 中国石油集团渤海钻探工程有限公司 | Expansion-type degradable bridge plug |
| CN107191170A (en) * | 2017-07-06 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | The intelligent bridging plug of one kind pumping makees completion method with perforation connection |
| CN109989723A (en) * | 2017-12-29 | 2019-07-09 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN111005702A (en) * | 2019-12-31 | 2020-04-14 | 陕西海格瑞恩实业有限公司 | Novel-sleeved integrated seat sealing tool soluble magnesium alloy bridge plug |
| CN112983322A (en) * | 2021-02-07 | 2021-06-18 | 中国石油天然气股份有限公司 | Anchoring and packing integrated positioning ball seat and packing method |
| CN115075773A (en) * | 2021-03-12 | 2022-09-20 | 中国石油天然气股份有限公司 | Oil and gas well production method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106703746A (en) * | 2016-12-19 | 2017-05-24 | 中国石油集团渤海钻探工程有限公司 | Expansion-type degradable bridge plug |
| CN106703746B (en) * | 2016-12-19 | 2022-06-10 | 中国石油天然气集团有限公司 | Expansion type degradable bridge plug |
| CN106639963A (en) * | 2016-12-28 | 2017-05-10 | 中国石油集团渤海钻探工程有限公司 | Degradable packer, multi-stage layering fracturing pipe column and fracturing construction method thereof |
| CN107191170A (en) * | 2017-07-06 | 2017-09-22 | 中国石油集团渤海钻探工程有限公司 | The intelligent bridging plug of one kind pumping makees completion method with perforation connection |
| CN109989723A (en) * | 2017-12-29 | 2019-07-09 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN109989723B (en) * | 2017-12-29 | 2021-11-02 | 中国石油天然气股份有限公司 | Multi-cluster perforation combined fracturing sealing device for blasting releasing |
| CN111005702A (en) * | 2019-12-31 | 2020-04-14 | 陕西海格瑞恩实业有限公司 | Novel-sleeved integrated seat sealing tool soluble magnesium alloy bridge plug |
| CN112983322A (en) * | 2021-02-07 | 2021-06-18 | 中国石油天然气股份有限公司 | Anchoring and packing integrated positioning ball seat and packing method |
| CN115075773A (en) * | 2021-03-12 | 2022-09-20 | 中国石油天然气股份有限公司 | Oil and gas well production method |
| CN115075773B (en) * | 2021-03-12 | 2024-05-28 | 中国石油天然气股份有限公司 | Oil and gas well production method |
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