CN106150469A - Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string - Google Patents

Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string Download PDF

Info

Publication number
CN106150469A
CN106150469A CN201610759512.5A CN201610759512A CN106150469A CN 106150469 A CN106150469 A CN 106150469A CN 201610759512 A CN201610759512 A CN 201610759512A CN 106150469 A CN106150469 A CN 106150469A
Authority
CN
China
Prior art keywords
double helix
oil pipe
pipe nipple
pipe
grade
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
CN201610759512.5A
Other languages
Chinese (zh)
Inventor
仝少凯
王祖文
岳艳芳
白明伟
温亚魁
张冕
杨红斌
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.)
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Downhole Operation Co of CNPC Chuanqing 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 Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN201610759512.5A priority Critical patent/CN106150469A/en
Priority to PCT/CN2016/099268 priority patent/WO2018040139A1/en
Publication of CN106150469A publication Critical patent/CN106150469A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B43/11—Perforators; Permeators
    • E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints

Abstract

The present invention provides a kind of limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, including the first order oil pipe being sequentially connected with from well head to shaft bottom and n-th grade of oil pipe, it is provided with multiple Double helix pipe nipple and oil pipe, described Double helix pipe nipple and oil pipe between described first order oil pipe and n-th grade of oil pipe alternately to connect；Described n-th grade of oil pipe lower end is connected with Double helix pipe nipple and upper hydraulic ejector in turn, described upper hydraulic ejector lower end is connected with lower Double helix pipe nipple and lower hydraulic ejector in turn, described lower hydraulic ejector lower end connects telescopic compensator, and described telescopic compensator lower end connects underseal drag fracturing packer.The present invention makes big liquid measure, high flow rate load fluid along helix runner with spiral flow state motion, ensure that effective sand concentration of load fluid under big liquid measure, flow at high speed, thus maintain and enter the steady statue of sand concentration at the ejector of multistage sub-clustering perforation upstream and downstream, improve perforating effect.

Description

Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string
Technical field
The present invention relates to limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, be primarily adapted for use in horizontal well volume fracturing In multistage sub-clustering perforating and fracturing tubing string.
Background technology
Horizontal well volume fracturing technology is the main flow renovation technique produced in current Changqing oilfields increasing the storage, implements this technology Key tool string is multistage dragging/multistage fixed tubular column hydraulic jetting fracturing tubing string, due to high pump pressure, huge discharge, big liquid measure, big Under the flowing of sand amount fluid, easily there is the separation of sand liquid, sand particles depositional phenomenon at long horizontal sections in load fluid, which decreases entrance Sand concentration at the ejector of upstream and downstream, sand amount, cause upstream and downstream ejector perforating effect the best, make the perforation tunnel of generation (width, length) does not reaches calculated value and numerical simulation result, is unfavorable for multistage sub-clustering perforation, makes to follow-up pressure break crack initiation Become certain difficulty.
To this end, company's independent research Double helix shunt nipple, tested by scene and laboratory experiment, achieve good Experiment effect.Experiment finds, when high speed load fluid flows through one section of straight tube such as grade, sand particles moves to pipeline central part from BOP Position, increasing sand particles is to the gathering of pipeline centre, and moves along pipeline liquid stream direction, and sand concentration is divided along pipeline height Cloth rule is " pipeline center is high, low at the upper and lower wall of pipeline ", but when flowing through Double helix shunt nipple, high speed load fluid is with rotation The rapid mix homogeneously of stream mode spirally to travel forward, after Double helix shunt nipple, high speed load fluid is still with spiral shell Rotating eddy flow state travels forward, and moving displacement is longer.
According to above-mentioned phenomenon and principle, innovation proposes whether can connect this Double helix in the various location of tubing string and divides Stream pipe nipple, forms limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, just solves the current long water of horizontal well volume fracturing Flat section sand liquid separates, the problem of sand particles deposition, to this end, devise limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string.
Summary of the invention
It is short that the present invention increases Double helix by the position (certain tubing length) different at multistage sub-clustering injection fracturing string Joint, makes high speed load fluid produce spiral flow kinestate when flowing through first order Double helix pipe nipple, high after Double helix pipe nipple Speed load fluid still travels forward with spiral flow state, and the displacement moved is exactly between every two-stage Double helix pipe nipple Tubing length, thus remain high speed load fluid in long horizontal sections with spiral flow state motion, until moving to sub-clustering At the ejector of perforation upstream and downstream, effectively carry out perforation and follow-up pressure break, solve current horizontal well long horizontal sections sand liquid separate, Granule deposition problems, it is ensured that horizontal well volume fracturing multistage sub-clustering perforating and fracturing construction technology success rate.
The technical problem to be solved in the present invention is to provide limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, makes big liquid Amount, high flow rate load fluid move along tubing string length direction with spiral flow state, it is ensured that sand particles and the real-time mix homogeneously of liquid, Improve the standard accordingly well long horizontal sections load fluid medium sand concentration, the stability of sand amount, reach the effect of effective perforation and pressure break.
The technical solution used in the present invention is:
Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, including the first order oil pipe being sequentially connected with from well head to shaft bottom, With n-th grade of oil pipe, being provided with multiple Double helix pipe nipple and oil pipe between described first order oil pipe and n-th grade of oil pipe, described is double Spiral pipe nipple and oil pipe alternately connect；Described n-th grade of oil pipe lower end is connected with Double helix pipe nipple and upper hydraulic ejector in turn, Described upper hydraulic ejector lower end is connected with lower Double helix pipe nipple and lower hydraulic ejector, described lower hydraulic ejector lower end in turn Connecting and have telescopic compensator, described telescopic compensator lower end connects underseal drag fracturing packer.
Connect between described upper Double helix pipe nipple and n-th grade of oil pipe and have upper adjustment pipe nipple, described upper adjustment pipe nipple and n-th grade Oil pipe is connected by safety joint.
It is connected by lower adjustment pipe nipple between described lower Double helix pipe nipple and upper hydraulic ejector.
It is provided with ball-and-seat between described lower hydraulic ejector and telescopic compensator.
Described first order oil pipe and n-th grade of vitta structure are identical, are Φ 73mm oil pipe.
Described upper adjustment pipe nipple is identical with lower adjustment pipe nipple structure, is Φ 73mm and adjusts pipe nipple.
Above-mentioned multiple Double helix pipe nipple length is 2500mm, external diameter 80mm, internal diameter 40mm, and helix is along side clockwise To, helical angle 45 °, Double helix pitch 120mm, bifilar helix spacing 30mm.
It is provided with spiral dovetail groove in described multiple Double helix pipe nipples, its spiral trapezoidal flute length 120mm, groove depth 5mm, bottom land Portion width 10mm, 60 ° of trapezoidal angle, it is coated with anti-high-abrasive material in described spiral dovetail groove.
A Double helix pipe nipple and an oil pipe, described Double helix it is provided with between described first order oil pipe and n-th grade of oil pipe Pipe nipple and oil pipe alternately connect；First order Double helix pipe nipple, the second level it is connected with in turn between first order oil pipe and n-th grade of oil pipe Oil pipe, second level Double helix pipe nipple, third level oil pipe, third level Double helix pipe nipple, fourth stage oil pipe, fourth stage Double helix are short Joint.
The invention have the benefit that
The present invention is coated with anti-high-abrasive material in Double helix pipe nipple Double helix dovetail groove, it is therefore prevented that the local punching of dual-spiral sprue Erosion, improves the eddy flow effect of dual-spiral sprue.By the position different at multistage sub-clustering injection fracturing string, (jet tube is long Degree) increase Double helix pipe nipple, make high speed load fluid produce spiral flow kinestate when flowing through first order Double helix pipe nipple, pass through After Double helix pipe nipple, high speed load fluid still travels forward with spiral flow state, and the displacement moved is exactly every two-stage pair Tubing length between spiral pipe nipple, remain high speed load fluid in long horizontal sections with spiral flow state motion, until Moving at the ejector of sub-clustering perforation upstream and downstream, effectively carry out perforation and pressure break, application effect is notable, practical, solves Horizontal well long horizontal sections sand liquid separation at present, sand particles deposition problems, improve horizontal well volume fracturing multistage sub-clustering perforation pressure Split construction technology success rate.
It is further detailed below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 is limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string schematic diagram；
Fig. 2 Double helix pipe nipple bifilar helix clockwise expanded view；
Fig. 3 Double helix pipe nipple double spiral groove clockwise top view.
In figure, reference is: 1-first order oil pipe；The 1st grade of Double helix pipe nipple of 2-；The 2nd grade of oil pipe of 3-；4-the 2nd grade is double Spiral pipe nipple；5-3rd level oil pipe；6-3rd level Double helix pipe nipple；7-fourth stage oil pipe；8-fourth stage Double helix pipe nipple；9-n-th Level oil pipe；10-safety joint；Pipe nipple is adjusted on 11-；12-upper Double helix pipe nipple；The upper hydraulic ejector of 13-；Adjust short under 14- Joint；Double helix pipe nipple under 15-；Hydraulic ejector under 16-；17-ball-and-seat；18-telescopic compensator；19-underseal drag fracturing seals Every device.
Detailed description of the invention
Embodiment 1:
The present invention provides a kind of limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string as shown in Figure 1, and the present invention passes through The different position (certain tubing length) of multistage sub-clustering injection fracturing string increases Double helix pipe nipple, makes high speed load fluid flow through the Producing spiral flow kinestate during one-level Double helix pipe nipple, after Double helix pipe nipple, high speed load fluid is still with spiral flow State travels forward, and the displacement moved is exactly the tubing length between every two-stage Double helix pipe nipple, thus remains High speed load fluid in long horizontal sections with spiral flow state motion, until moving to, at the ejector of sub-clustering perforation upstream and downstream, to have Effect carries out perforation and follow-up pressure break, solves the separation of current horizontal well long horizontal sections sand liquid, sand particles deposition problems, it is ensured that horizontal well Volume fracturing multistage sub-clustering perforating and fracturing construction technology success rate.
The technical problem to be solved in the present invention is to provide limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, makes big liquid Amount, high flow rate load fluid move along tubing string length direction with spiral flow state, it is ensured that sand particles and the real-time mix homogeneously of liquid, Improve the standard accordingly well long horizontal sections load fluid medium sand concentration, the stability of sand amount, reach the effect of effective perforation and pressure break.
Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, including the first order oil being sequentially connected with from well head to shaft bottom Pipe 1 and n-th grade of oil pipe 9, be provided with multiple Double helix pipe nipple and oil pipe, institute between described first order oil pipe 1 and n-th grade of oil pipe 9 The Double helix pipe nipple stated and oil pipe alternately connect；Described n-th grade of oil pipe 9 lower end is connected with Double helix pipe nipple 12 and Shang Shui in turn Power ejector 13, described upper hydraulic ejector 13 lower end is connected with lower Double helix pipe nipple 15 and lower hydraulic ejector 16, institute in turn Stating the connection of lower hydraulic ejector 16 lower end and have telescopic compensator 18, described telescopic compensator 18 lower end connects underseal drag fracturing Packer 19.
According to on-the-spot needs in the present embodiment, determine the value of n in described n-th grade of oil pipe 9, at every two-stage Double helix pipe nipple Between oil pipe length should equal to load fluid by after upper level Double helix pipe nipple still with the position of spiral flow state motion Move, it is ensured that big liquid measure, the spiral flow state continuous effective of high flow rate load fluid.So determine tubing length, finally determine Needing a few joint Double helix pipe nipple, multiple Double helix pipe nipples are easy to allocate in construction operation and change.
The present invention is the important tool realizing shaft bottom sand liquid mixture again, changes entrance horizontal well long horizontal sections load fluid Middle sand particles, the motion fluidised form of liquid, make originally forced the sand particles of sinking by action of gravity and flow along tubing string diametric(al) Liquid be sufficiently mixed under Double helix eddy flow and centrifugal action, it is ensured that effective sand concentration of load fluid under flow at high speed, Thus maintain and enter the steady statue of sand concentration at multistage sub-clustering perforation upstream and downstream ejectors, it is ensured that normal perforation and after Continuous pressure break, is suitably applied in horizontal well volume fracturing multistage sub-clustering perforating and fracturing tubing string.Other horizontal well volume fracturings are multistage Motionless/to drag hydraulic jetting fracturing tubular column structure in above-mentioned tubing string figure, suitably can increase or change corresponding tool, but n-th grade Tubing string more than Double helix pipe nipple keeps constant.
The present invention relates to and changes sand particles, the motion fluidised form of liquid in entrance horizontal well long horizontal sections load fluid, makes originally The sand particles being forced sinking by action of gravity and the liquid flowed along tubing string diametric(al) are at Double helix eddy flow and centrifugal action Under be sufficiently mixed, it is ensured that effective sand concentration of load fluid under flow at high speed, thus maintain entrance multistage sub-clustering perforation upper and lower The steady statue of sand concentration at trip ejector, it is ensured that normal perforation and follow-up pressure break, is suitably applied horizontal well volume fracturing In multistage sub-clustering perforating and fracturing tubing string.
Embodiment 2:
On the basis of above-described embodiment, in the present embodiment, described upper Double helix pipe nipple 12 is connected between n-th grade of oil pipe 9 Upper adjustment pipe nipple 11, described upper adjustment pipe nipple 11 is had to be connected by safety joint 10 with n-th grade of oil pipe 9.
It is connected by lower adjustment pipe nipple 14 between described lower Double helix pipe nipple 15 and upper hydraulic ejector 13.
It is provided with ball-and-seat 17 between described lower hydraulic ejector 16 and telescopic compensator 18.
Described first order oil pipe 1 is identical with n-th grade of oil pipe 9 structure, is Φ 73mm oil pipe.
Described upper adjustment pipe nipple 11 is identical with lower adjustment pipe nipple 14 structure, is Φ 73mm and adjusts pipe nipple.
As shown in Figure 2 and Figure 3, above-mentioned multiple Double helix pipe nipple length is 2500mm, external diameter 80mm, internal diameter 40mm, spiral Line along clockwise direction, helical angle 45 °, Double helix pitch 120mm, bifilar helix spacing 30mm.
It is provided with spiral dovetail groove in described multiple Double helix pipe nipples, its spiral trapezoidal flute length 120mm, groove depth 5mm, bottom land Portion width 10mm, 60 ° of trapezoidal angle, it is coated with anti-high-abrasive material in described spiral dovetail groove.
Being provided with 4 Double helix pipe nipples and 4 oil pipes between described first order oil pipe 1 and n-th grade of oil pipe 9, described is double Spiral pipe nipple and oil pipe alternately connect；First order Double helix pipe nipple it is connected with in turn between first order oil pipe 1 and n-th grade of oil pipe 9 2, second level oil pipe 3, second level Double helix pipe nipple 4, third level oil pipe 5, third level Double helix pipe nipple 6, fourth stage oil pipe 7, Level Four Double helix pipe nipple 8.
Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string, it is characterised in that from well head at the bottom of horizontal well: wherein, often One-level Double helix pipe nipple inner chamber processes Double helix dovetail groove according to Archimedes's bifilar helix principle design, and trapezoidal at Double helix Rooved face is coated with high-abrasive material, to prevent the local erosion of dual-spiral sprue.Big liquid measure, high flow rate load fluid can be made along spiral Sand particles in horizontal segment load fluid and liquid, with spiral flow state motion, are sufficiently mixed uniformly, remain by line runner The high speed load fluid of mix homogeneously moves at the ejector of sub-clustering perforation upstream and downstream, improves upstream and downstream ejector perforating effect.
In the present invention, the length of oil pipe between every two-stage Double helix pipe nipple should be equal to load fluid by upper level Double helix Still with the displacement of spiral flow state motion after pipe nipple, it is ensured that big liquid measure, high flow rate load fluid spiral flow state continuous Effectively.
In the present invention, the upper and lower part screw thread button-type of Double helix pipe nipple is 2-7/8 " EUE, per inch 8 tooth, tapering 1:16.
The connected mode of the present invention is that tubing round thread connects, in order to dismantles and changes.
Double helix pipe nipple length 2500mm in the present invention, external diameter 80mm, internal diameter 40mm, helix along clockwise direction, Helical angle 45 °, Double helix pitch 120mm, bifilar helix spacing 30mm, spiral trapezoidal flute length 120mm, groove depth 5mm, trench bottom width Degree 10mm, 60 ° of trapezoidal angle.
The structural parameters of other instruments in the present invention are consistent with conventional tool parameter, select by dimensional requirement, its Middle underseal drag fracturing packer 19 is mechanical compression type packer.
Multiple its bodies of Double helix pipe nipple in the present invention all use 35CrMo material, thermally treated hardness reach 197 ~ 235HB, inner chamber is according to Archimedes's bifilar helix principle special processing Double helix dovetail groove, and at Double helix dovetail groove plated surface There is nickel-bass alloy material to prevent fluid from causing spiral dovetail groove local erosion due to the change of rotation direction.This Double helix pipe nipple is double The processing of spiral dovetail groove is not allow for the defect such as crackle, pore, and spiral transition is the most smooth.
The connected mode of the present invention is that tubing round thread connects, in order to dismantles and changes.
The application mode of the present invention is:
First before Oil/gas Well carries out horizontal well volume fracturing multistage dragging (motionless) tubing string sub-clustering injection pressing crack construction, according to Operating tool string structure chart, is arranged on the diverse location of fracturing string by Double helix pipe nipple, the good fracturing string of assembly and connection.
2. above-mentioned fracturing string is lowered into design well depth position, then well head release tubing string suspending weight, sets underseal and drag Fracturing packer 19, it is achieved the positive sealing of fracturing string and location.
The most above-mentioned fracturing string enters after well sets grappling, utilizes pump truck with discharge capacity 0.6～1.0 m3The circulation of/min clear water is washed Well, it is ensured that pit shaft content of impurities is less than 0.2%, and wellbore clean is clean.
The most then pump truck output is improved to 1.0 ~ 2.0m3/ min, is 130 ~ 145kg/m by sand concentration3Load fluid is along pressure break Tubing string pumps into, when high speed load fluid flow through multiple Double helix pipe nipple to n-th grade Double helix pipe nipple and lower Double helix pipe nipple 12 with under During Double helix pipe nipple 15, due to double-spiral structure make high speed load fluid produce spiral flow kinestate, by load fluid Granule and liquid are sufficiently mixed uniformly, and in keeping whole horizontal segment fracturing string, high speed load fluid is transported with spiral flow state all the time Dynamic, until moving on upstream and downstream, at hydraulic ejector 13 and lower hydraulic ejector 16, to reach perforation purpose, formed pit shaft with Combination of zones passage.
5., after penetrating perforate road, pump truck is with discharge capacity 2.0m3/ min injects displacement fluid, is replaced by load fluid in fracturing string into ground Layer, then rinses fracturing string.
6. after rinsing, casing annulus raising discharge capacity to 3.6 ~ 4.0m3/ min proceeds by annular fracturing, meanwhile, and pressure Split tubing string interior with discharge capacity 1.0m3/ min companion's note balance pressure, after requiring pressure break according to detail design, then with discharge capacity 4.0m3/ min notes Enter displacement fluid, fracturing fluid in fracturing string is all replaced into stratum, to complete reservoir fracturing improvement.
7., after first paragraph perforating and fracturing completes, well head upper lifting pipe post deblocking underseal drag fracturing packer 19, according to executing Carrying to regulation well depth position in work design infusion program, release suspending weight secondary sets underseal drag fracturing packer 19, then depends on The injection pressing crack construction of the 2nd section has been continued according to above-mentioned hydraulic perforating, fracturing step.
8., after the construction of complete design hop count hydraulic jetting fracturing, fracturing string is tripped out well head, enters down the trachea that recovers the oil Post completion, fills wellhead assembly, and dismantles in time, checks multiple oil pipe alternately connected and the double spiral shell of Double helix pipe nipple to n-th grade Rotation pipe nipple and upper Double helix pipe nipple 12 check outer wall and Double helix inner chamber with lower Double helix pipe nipple 15() service condition, it is used for maintaining Or change multiple oil pipe alternately connected and Double helix pipe nipple to n-th grade Double helix pipe nipple and upper Double helix pipe nipple 12 and lower pair of spiral shell Rotation pipe nipple 15, in order to follow-up again carry out hydraulic jetting fracturing construction.

Claims (9)

  1. The most limited grade of discontinuous Double helix shaft bottom sand liquid mixture tubing string, it is characterised in that: include being sequentially connected with from well head to shaft bottom First order oil pipe (1) and n-th grade of oil pipe (9), be provided with multiple between described first order oil pipe (1) and n-th grade of oil pipe (9) Double helix pipe nipple and oil pipe, described Double helix pipe nipple and oil pipe alternately connect；Described n-th grade of oil pipe (9) lower end is sequentially connected with Upper Double helix pipe nipple (12) and upper hydraulic ejector (13), described upper hydraulic ejector (13) lower end is had to be connected with lower pair of spiral shell in turn Rotation pipe nipple (15) and lower hydraulic ejector (16), described lower hydraulic ejector (16) lower end connects telescopic compensator (18), institute State the connection of telescopic compensator (18) lower end and have underseal drag fracturing packer (19).
  2. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: on described It is connected between Double helix pipe nipple (12) with n-th grade of oil pipe (9) and has upper adjustment pipe nipple (11), described upper adjustment pipe nipple (11) and n-th Level oil pipe (9) is connected by safety joint (10).
  3. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: under described It is connected by lower adjustment pipe nipple (14) between Double helix pipe nipple (15) with upper hydraulic ejector (13).
  4. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: under described Ball-and-seat (17) it is provided with between hydraulic ejector (16) and telescopic compensator (18).
  5. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: described First order oil pipe (1) is identical with n-th grade of oil pipe (9) structure, is Φ 73mm oil pipe.
  6. 6. according to the limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string described in Claims 2 or 3, it is characterised in that: institute The upper adjustment pipe nipple (11) stated is identical with lower adjustment pipe nipple (14) structure, is Φ 73mm and adjusts pipe nipple.
  7. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: above-mentioned many Individual Double helix pipe nipple length is 2500mm, external diameter 80mm, internal diameter 40mm, helix along clockwise direction, helical angle 45 °, double Helical pitch 120mm, bifilar helix spacing 30mm.
  8. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: described It is provided with spiral dovetail groove in multiple Double helix pipe nipples, its spiral trapezoidal flute length 120mm, groove depth 5mm, groove bottom width 10mm, ladder 60 ° of shape angle, is coated with anti-high-abrasive material in described spiral dovetail groove.
  9. Limited level discontinuous Double helix shaft bottom the most according to claim 1 sand liquid mixture tubing string, it is characterised in that: described Be provided with 4 Double helix pipe nipples and 4 oil pipes between one-level oil pipe (1) and n-th grade of oil pipe (9), described Double helix pipe nipple and Oil pipe alternately connects；Be connected with in turn between first order oil pipe (1) and n-th grade of oil pipe (9) first order Double helix pipe nipple (2), Two grades of oil pipes (3), second level Double helix pipe nipple (4), third level oil pipe (5), third level Double helix pipe nipple (6), fourth stage oil pipe (7), fourth stage Double helix pipe nipple (8).
CN201610759512.5A 2016-08-30 2016-08-30 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string Pending CN106150469A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201610759512.5A CN106150469A (en) 2016-08-30 2016-08-30 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string
PCT/CN2016/099268 WO2018040139A1 (en) 2016-08-30 2016-09-19 Limited-stage discontinuous and dual-spiral string for mixture of sand and liquid at well bottom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610759512.5A CN106150469A (en) 2016-08-30 2016-08-30 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string

Publications (1)

Publication Number Publication Date
CN106150469A true CN106150469A (en) 2016-11-23

Family

ID=57344591

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610759512.5A Pending CN106150469A (en) 2016-08-30 2016-08-30 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string

Country Status (2)

Country Link
CN (1) CN106150469A (en)
WO (1) WO2018040139A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219127A (en) * 2017-06-28 2017-09-29 中国地质调查局油气资源调查中心 Use for laboratory visualizes hydraulic fracturing physical simulating device and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746828B (en) * 2019-10-29 2022-07-05 中国石油天然气股份有限公司 Sand prevention construction process
GB2613778B (en) * 2021-12-03 2024-04-10 Bernard Lee Paul Method of completion of a wellbore

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460936B1 (en) * 1999-06-19 2002-10-08 Grigori Y. Abramov Borehole mining tool
CN105649596A (en) * 2016-03-11 2016-06-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedean-double-helix flow split nipple
CN105649598A (en) * 2016-03-11 2016-06-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedean-double-helix flow split type double-cluster hydraulic ejection and fracturing integrated tubular column
CN205445572U (en) * 2016-03-11 2016-08-10 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedes double-helix diverter
CN206016790U (en) * 2016-08-30 2017-03-15 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080179061A1 (en) * 2006-11-13 2008-07-31 Alberta Energy Partners, General Partnership System, apparatus and method for abrasive jet fluid cutting
CN205445573U (en) * 2016-03-11 2016-08-10 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedes'double spiral split flow dual cluster hydraulic jet fracturing string

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460936B1 (en) * 1999-06-19 2002-10-08 Grigori Y. Abramov Borehole mining tool
CN105649596A (en) * 2016-03-11 2016-06-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedean-double-helix flow split nipple
CN105649598A (en) * 2016-03-11 2016-06-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedean-double-helix flow split type double-cluster hydraulic ejection and fracturing integrated tubular column
CN205445572U (en) * 2016-03-11 2016-08-10 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Archimedes double-helix diverter
CN206016790U (en) * 2016-08-30 2017-03-15 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219127A (en) * 2017-06-28 2017-09-29 中国地质调查局油气资源调查中心 Use for laboratory visualizes hydraulic fracturing physical simulating device and method

Also Published As

Publication number Publication date
WO2018040139A1 (en) 2018-03-08

Similar Documents

Publication Publication Date Title
US11506033B2 (en) Oil extraction and gas production method capable of in-situ sand control and removal by downhole hydraulic lift
CN206016790U (en) Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string
CN206860155U (en) Coal-series gas U-shaped well drilling and fracturing structure
CN106150469A (en) Limited level discontinuous Double helix shaft bottom sand liquid mixture tubing string
CN205445573U (en) Archimedes'double spiral split flow dual cluster hydraulic jet fracturing string
CN106401535A (en) Method for determining drainage and mining intensity of coal-bed gas well
CN104100237B (en) A kind of discharge and mining method of coal bed gas well
CN107620583A (en) A kind of liquid discharging gas producing tubing string and its production method
CN204941480U (en) The horizontal well completion sleeve pipe of segmentation exploitation and the tubing string of formation thereof can be realized
CN105649596B (en) Archimedes's double helix shunt nipple
CN115879644A (en) Shale gas well production mode optimization method based on optimized tubular column
CN103775010A (en) Borehole cleaning tool for horizontal-section gas drilling
CN105649598B (en) The double cluster hydraulic jetting fracturing integrated pipe columns of Archimedes's double helix shunt
CN101338660B (en) Horizontal production-injection well completion structure possessing flow control function
CN109138938B (en) Flow regulating and water controlling device, short joint, tubular column and secondary water controlling well completion method
CN205445572U (en) Archimedes double-helix diverter
CN203412535U (en) Drilling fluid shunt device for starting or stopping pump through multiple steps
CN201218084Y (en) Liquid-discharging gas-extracting column with discharge aid device
CN203097765U (en) Auxiliary cutting-carrying tool for coal-bed methane exploiting air inflation underbalanced drilling multilateral well
CN206016791U (en) A kind of horizontal well volume fracturing is with spiral double-deck diversion oil pipe
CN202832410U (en) Spiral flow water draining and gas production device used for natural gas extraction
CN110130857A (en) A kind of open-hole horizontal well tune flow control water installations and balanced oil extraction process tubular column
CN206205778U (en) A kind of underground is slidingly sealed instrument and its unlimited extended reach drilling device
CN105653850B (en) Oil well delamination oil recovery bridge-type point adopts the definite method of device single current ball valve discharge coefficient
CN206722769U (en) A kind of horizontal well sand control commingled column

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: 20161123