CN109236230A - A kind of magnesium-base metal dissolvable bridge plug - Google Patents

A kind of magnesium-base metal dissolvable bridge plug Download PDF

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Publication number
CN109236230A
CN109236230A CN201811430754.5A CN201811430754A CN109236230A CN 109236230 A CN109236230 A CN 109236230A CN 201811430754 A CN201811430754 A CN 201811430754A CN 109236230 A CN109236230 A CN 109236230A
Authority
CN
China
Prior art keywords
slips
bridge plug
magnesium
packing element
central tube
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
Application number
CN201811430754.5A
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Chinese (zh)
Inventor
詹鸿运
冯强
刘志斌
郭鸣
韩永亮
张镇
丁柯宇
赵鹏
李梅
李娜
崔振锚
王学正
张鹏
骆劲羽
任正军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CNPC Bohai Drilling Engineering Co Ltd
Original Assignee
CNPC Bohai Drilling Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CNPC Bohai Drilling Engineering Co Ltd filed Critical CNPC Bohai Drilling Engineering Co Ltd
Priority to CN201811430754.5A priority Critical patent/CN109236230A/en
Publication of CN109236230A publication Critical patent/CN109236230A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices, or the like
    • E21B33/134Bridging plugs
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • E21B33/122Multiple string packers

Abstract

The invention discloses a kind of magnesium-base metal dissolvable bridge plug, including central tube, shear pin of giving up, spacer ring, upper slips, upper centrum, packing element, protection ring, hypocentrum, lower slips, pedestal and anti-blocking floral tube;The spacer ring, upper slips, upper centrum, packing element, protection ring, hypocentrum, lower slips are sequentially sleeved on central tube from top to bottom, and pedestal is connected on central tube by the external screw-thread of central tube lower end;Outer cylinder upper end is set to be threadedly coupled on igniting setting tool by T-type.Compared with prior art, which selects magnesium-based soluble metal material, and solubility property is reliable;Using upper and lower two-way monoblock type kava structure, monoblock type slips junction rupture slips opens when reaching the thrust of 2-3t, and slip insert is combined using ceramic particle with alloying pellet, guarantees anchoring effect and anchorage force;Pedestal has anti-rotation structure design, when chance sand plug or shaft bottom situation complexity need to bore plug in a short time, brill is facilitated to fill in.

Description

A kind of magnesium-base metal dissolvable bridge plug
Technical field
The present invention relates to exploitation of oil-gas field technical field, in particular to a kind of magnesium-base metal dissolvable bridge plug.
Background technique
As shale gas and Low permeable oil and gas reservoirs exploitation obtain good result, horizontal well stage fracturing technology has become page The agent technology of the unconventional resource volume increase exploitation such as rock gas, Low Permeability Oil/gas, coal bed gas.As staged fracturing important tool it One, bridge plug is using increasingly extensive.It can be wherein completely dissolved in returning drain after solvable bridge plug pressure break, save and bore mill expense, realized Production is quickly asked, full-bore may be implemented in pit shaft, reduces operating risk;However many offices are had also discovered in a large amount of site operation It is sex-limited, constrain the technology further genralrlization application.By long-term live trace analysis, domestic solvable bridge plug is primarily present at present The problems such as insoluble after premature failure, pressure, significantly limits the popularization and application of the technology.There is the basic original of problem above in analysis Because be solvable bridge plug material, structure and construction technology and different well's conditions matching it is poor;And the technology is since it is to hole condition Selectivity is stronger, solves the problems, such as the matching of solvable bridging material, structure and technique and different well's conditions, is key problem in technology.
Summary of the invention
The object of the present invention is to provide a kind of magnesium-base metal dissolvable bridge plugs.
For this purpose, technical solution of the present invention is as follows:
A kind of magnesium-base metal dissolvable bridge plug, including central tube, shear pin of giving up, spacer ring, upper slips, upper centrum, packing element, Protection ring, hypocentrum, lower slips and pedestal;The spacer ring, upper slips, upper centrum, packing element, protection ring, hypocentrum, lower slips are certainly It is sequentially sleeved on central tube under above, pedestal is connected on central tube by the external screw-thread of central tube lower end;Central tube upper end By giving up, shear pin is fixed on the connector for setting cylinder, and the connector upper end for setting cylinder is threaded in igniting by T-type and sits On envelope tool mandrel, sets outer cylinder upper end and be threadedly coupled on igniting setting tool lower end outer cylinder by T-type, set outer cylinder lower end End face is extruded on solvable bridge plug spacer ring.
Further, the slips tooth material of the upper slips and lower slips is the combination of ceramic particle and alloying pellet Object.
Further, the contact surface of the contact surface of the upper centrum and upper slips, hypocentrum and lower slips is all made of tiltedly Face design.
Further, the packing element uses three groups of packing element combining forms, and packing element medium design has support ring, in, lower glue Design has protection ring between cylinder, it is ensured that packing element sealed reliable.
Further, the upper and lower centrum inner surface is formed with certain roughness surface, and the shape on upper and lower centrum At there is circulation port.
Further, it is formed with shelves pin on the pedestal and slots in pedestal lower end vertical direction.
Compared with prior art, which has the advantage that
(1) magnesium-based soluble metal material is selected, solubility property is reliable;
(2) using upper and lower two-way monoblock type kava structure, rupture card in monoblock type slips junction when reaching the thrust of 2-3t It watt opens, slip insert is combined with alloying pellet using ceramic particle, guarantee anchoring effect and anchorage force;
(3) pedestal has anti-rotation structure design, when chance sand plug or shaft bottom situation complexity need to bore plug in a short time, brill is facilitated to fill in;
(4) design has shelves pin and slots in pedestal lower end vertical direction on pedestal, and it is solvable to prevent from returning blocking on upper level ball While bridge plug, moreover it is possible to increase area of passage, sand plug is effectively prevent to accumulate;
(5) design has circulation port on pedestal, can effectively increase pedestal after pressure and return drain contact area, it is ensured that tool energy Enough quickly dissolutions;
(6) central tube bottom end can connect anti-blocking floral tube according to selection, and the design of floral tube structure can effectively prevent sand plug;
(7) centrum inner surface design is processed into certain roughness surface, and solvable bridge plug is facilitated to set rear axial locking;
(8) hypocentrum design has circulation port on, can effectively increase centrum, central tube after pressure and return drain contact area, Ensure that tool can quickly dissolve;
(9) centrum and slips contact surface use inclined design, make slips by bevel angle and the design of slips ground-angle It opens and is easy, anchoring is reliable;
(10) solvable packing element uses three groups of packing element combining forms, and packing element medium design has support ring, in, set between lower rubber cylinder In respect of protection ring, it is ensured that packing element sealed reliable, and it is all solvable;
(11) solvable bridge plug ontology uses four kinds of soluble materials, selects difference can according to each component structural and intensity difference Molten material, at the same can mildly be returned according to live well drain behavior pattern selection surface whether coating.
Detailed description of the invention
Fig. 1 is the cross-sectional view of magnesium-base metal dissolvable bridge plug provided by the invention.
Fig. 2 is the structural schematic diagram of solvable bridge plug pedestal.
Fig. 3 is the structural schematic diagram of magnesium-base metal dissolvable bridge plug.
Fig. 4 is the structural schematic diagram of solvable bridge plug slips.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described further, but following embodiments are absolutely not to this hair It is bright to have any restrictions.
A kind of magnesium-base metal dissolvable bridge plug, as Fig. 1~4 show, including central tube 3, shear pin 4 of giving up, spacer ring 5, upper slips 7, upper centrum 10, packing element 11, protection ring 12, hypocentrum 13, lower slips (14) and pedestal (15);The spacer ring 5, upper slips 7, on Centrum 10, packing element 11, protection ring 12, hypocentrum 13, lower slips 14 are sequentially sleeved in from top to bottom on central tube 3, and pedestal 15 passes through The external screw-thread of 3 lower end of central tube is connected on central tube 3;3 upper end of central tube is fixed on the company for setting cylinder by shear pin 4 of giving up On connector, the connector upper end for setting cylinder is threaded on igniting setting tool mandrel by T-type, is set outer cylinder upper end and is passed through T-type is threadedly coupled on igniting setting tool lower end outer cylinder, is set outer cylinder lower end surface and is extruded on solvable bridge plug spacer ring 5.
Preferably, the slips tooth material of the upper slips 7 and lower slips 14 is the combination of ceramic particle and alloying pellet Object.
Preferably, the upper centrum 10 and the contact surface, hypocentrum 13 and the contact surface of lower slips 14 of upper slips 7 are adopted Use inclined design.
Preferably, the packing element 11 uses three groups of packing element combining forms, and 11 medium design of packing element has support ring, in, under Design has protection ring between packing element, it is ensured that packing element sealed reliable.
Preferably, the upper centrum 10,13 inner surface of hypocentrum are formed with certain roughness surface, and in upper centrum 10, circulation port is formed on hypocentrum 13.
Preferably, it is formed with shelves pin on the pedestal 15 and slots in pedestal lower end vertical direction.
The application method of magnesium-base metal dissolvable bridge plug provided by the invention is as follows:
Solvable bridge plug is pumped using cable and enters well, tubing string is successively that solvable bridge plug+setting cylinder+cable sets work from bottom to up Tool+perforating gun+cable to well head, after solvable bridge plug is pumped to design position, firing cable setting tool of lighting a fire is generated downward Thrust promotion sets outer cylinder, and pedestal 15 and 3 screwed connection of central tube, central tube 3 are connected to cable by connector and set at this time It on the mandrel of tool, sets outer cylinder and pushes down on spacer ring 5, cut starting shear pin 6 and push down on upper slips 7, upper centrum 10, squeeze Packing element 11, hypocentrum 13, lower slips 14, spreading is anchored on casing wall upper lower slips respectively at this time, and packing element 11 is extruded completion Set, when setting force continue to rise cut give up shear pin 4 when, complete giving up for solvable bridge plug, upper portable cable to shooting point carries out Perforating job, perforation act cable after the completion, and from from well head pitching to solvable bridge plug, solvable ball forms close with bridge plug central tube 3 Envelope starts to carry out pressing crack construction;After pressing crack construction, solvable bridge plug is completely dissolved for 6-18 days in fracturing outlet liquid, is realized Pit shaft full-bore.

Claims (6)

1. a kind of magnesium-base metal dissolvable bridge plug, which is characterized in that including central tube (3), shear pin of giving up (4), spacer ring (5), on Slips (7), upper centrum (10), packing element (11), protection ring (12), hypocentrum (13), lower slips (14) and pedestal (15);It is described every Ring (5), upper slips (7), upper centrum (10), packing element (11), protection ring (12), hypocentrum (13), lower slips (14) are from top to bottom It is sequentially sleeved on central tube (3), pedestal (15) is connected on central tube (3) by the external screw-thread of central tube (3) lower end;Center Pipe (3) upper end is fixed on the connector for setting cylinder by shear pin of giving up (4), and the connector upper end for setting cylinder passes through T-type screw thread It is connected on igniting setting tool mandrel, sets outer cylinder upper end and be threadedly coupled on igniting setting tool lower end outer cylinder by T-type, Outer cylinder lower end surface is set to be extruded on solvable bridge plug spacer ring (5).
2. magnesium-base metal dissolvable bridge plug according to claim 1, which is characterized in that the upper slips (7) and lower card The slips tooth material of watt (14) is the composition of ceramic particle and alloying pellet.
3. magnesium-base metal dissolvable bridge plug according to claim 2, which is characterized in that the upper centrum (10) and upper card The contact surface of the contact surface of watt (7), hypocentrum (13) and lower slips (14) is all made of inclined design.
4. magnesium-base metal dissolvable bridge plug according to claim 3, which is characterized in that the packing element (11) uses three groups Packing element combining form, packing element (11) medium design have support ring, in, between lower rubber cylinder design have protection ring, it is ensured that packing element sealing Reliably.
5. magnesium-base metal dissolvable bridge plug according to claim 4, which is characterized in that the upper and lower centrum (10,13) Inner surface is formed with certain roughness surface, and is formed with circulation port on upper and lower centrum (10,13).
6. magnesium-base metal dissolvable bridge plug according to claim 5, which is characterized in that be formed on the pedestal (15) Shelves pin is simultaneously slotted in pedestal lower end vertical direction.
CN201811430754.5A 2018-11-28 2018-11-28 A kind of magnesium-base metal dissolvable bridge plug Pending CN109236230A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN109236230A true CN109236230A (en) 2019-01-18

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109577910A (en) * 2019-02-01 2019-04-05 天津凯英莱克机电技术有限公司 A kind of solvable bridge plug of all-metal pressure break
CN109826591A (en) * 2019-02-16 2019-05-31 陕西海格瑞恩实业有限公司 A kind of solvable bridge plug of full-bore magnesium alloy
CN109899028A (en) * 2019-04-26 2019-06-18 天津市玛特瑞科技有限公司 A kind of solvable bridge plug
CN109973045A (en) * 2019-03-29 2019-07-05 东方宝麟科技发展(北京)有限公司 Complete solvable bridge plug
CN110185414A (en) * 2019-07-05 2019-08-30 山东博赛特石油技术有限公司 A kind of solvable bridge plug of outer expanding
CN110513074A (en) * 2019-08-16 2019-11-29 中国石油集团长城钻探工程有限公司 Dissolvable bridge plug
CN110566156A (en) * 2019-10-19 2019-12-13 海塔石油科技有限公司 Bidirectional anchoring soluble fracturing bridge plug
CN110847844A (en) * 2019-11-27 2020-02-28 中国石油集团川庆钻探工程有限公司工程技术研究院 Fixed-point packing and layering extrusion sealing tool and using method thereof
CN111441742A (en) * 2020-05-13 2020-07-24 中国石油集团渤海钻探工程有限公司 Soluble bridge plug seat sealing head bag
CN111648739A (en) * 2020-06-29 2020-09-11 中国石油天然气集团有限公司 Rubber sleeve protection type soluble bridge plug for fracturing
CN112253044A (en) * 2020-11-05 2021-01-22 中国石油集团渤海钻探工程有限公司 High-ductility small-diameter dissolvable bridge plug
CN112483037A (en) * 2019-09-12 2021-03-12 中国石油化工股份有限公司 Packer
CN113107417A (en) * 2020-01-13 2021-07-13 中国石油天然气股份有限公司 Soluble releasing plug
CN115182702A (en) * 2022-07-07 2022-10-14 太原科技大学 Degradable bidirectional slip pressure abutment bridge plug

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CN103982158A (en) * 2013-02-12 2014-08-13 韦特福特/兰姆有限公司 Downhole tool having slip inserts composed of different materials
WO2014182301A1 (en) * 2013-05-09 2014-11-13 Halliburton Energy Services, Inc. Swellable packer with reinforcement and anti-extrusion features
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109577910B (en) * 2019-02-01 2021-05-28 成都通土科技有限公司 All-metal fracturing soluble bridge plug
CN109577910A (en) * 2019-02-01 2019-04-05 天津凯英莱克机电技术有限公司 A kind of solvable bridge plug of all-metal pressure break
CN109826591A (en) * 2019-02-16 2019-05-31 陕西海格瑞恩实业有限公司 A kind of solvable bridge plug of full-bore magnesium alloy
CN109973045A (en) * 2019-03-29 2019-07-05 东方宝麟科技发展(北京)有限公司 Complete solvable bridge plug
CN109899028A (en) * 2019-04-26 2019-06-18 天津市玛特瑞科技有限公司 A kind of solvable bridge plug
CN110185414A (en) * 2019-07-05 2019-08-30 山东博赛特石油技术有限公司 A kind of solvable bridge plug of outer expanding
CN110513074A (en) * 2019-08-16 2019-11-29 中国石油集团长城钻探工程有限公司 Dissolvable bridge plug
CN112483037A (en) * 2019-09-12 2021-03-12 中国石油化工股份有限公司 Packer
CN110566156A (en) * 2019-10-19 2019-12-13 海塔石油科技有限公司 Bidirectional anchoring soluble fracturing bridge plug
CN110847844A (en) * 2019-11-27 2020-02-28 中国石油集团川庆钻探工程有限公司工程技术研究院 Fixed-point packing and layering extrusion sealing tool and using method thereof
CN110847844B (en) * 2019-11-27 2023-08-18 中国石油天然气集团有限公司 Fixed-point packing layered extrusion sealing tool and use method thereof
CN113107417A (en) * 2020-01-13 2021-07-13 中国石油天然气股份有限公司 Soluble releasing plug
CN113107417B (en) * 2020-01-13 2022-05-10 中国石油天然气股份有限公司 Soluble releasing plug
CN111441742A (en) * 2020-05-13 2020-07-24 中国石油集团渤海钻探工程有限公司 Soluble bridge plug seat sealing head bag
CN111648739A (en) * 2020-06-29 2020-09-11 中国石油天然气集团有限公司 Rubber sleeve protection type soluble bridge plug for fracturing
CN112253044A (en) * 2020-11-05 2021-01-22 中国石油集团渤海钻探工程有限公司 High-ductility small-diameter dissolvable bridge plug
CN115182702A (en) * 2022-07-07 2022-10-14 太原科技大学 Degradable bidirectional slip pressure abutment bridge plug
CN115182702B (en) * 2022-07-07 2023-03-10 太原科技大学 Degradable bidirectional slip pressure abutment bridge plug

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