CN103643931A - Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column - Google Patents

Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column Download PDF

Info

Publication number
CN103643931A
CN103643931A CN201310701600.6A CN201310701600A CN103643931A CN 103643931 A CN103643931 A CN 103643931A CN 201310701600 A CN201310701600 A CN 201310701600A CN 103643931 A CN103643931 A CN 103643931A
Authority
CN
China
Prior art keywords
packer
pressing crack
tieback
crack construction
pressure
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
CN201310701600.6A
Other languages
Chinese (zh)
Inventor
乔金中
刘刚芝
王杏尊
付强
李英松
刘正伟
黄杰
矫洪喜
张晓涛
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.)
China Oilfield Services Ltd
China National Offshore Oil Corp CNOOC
Original Assignee
China Oilfield Services Ltd
China National Offshore Oil Corp CNOOC
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 China Oilfield Services Ltd, China National Offshore Oil Corp CNOOC filed Critical China Oilfield Services Ltd
Priority to CN201310701600.6A priority Critical patent/CN103643931A/en
Publication of CN103643931A publication Critical patent/CN103643931A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Earth Drilling (AREA)

Abstract

The invention relates to a completion and fracture integrated pipe column of an offshore openhole horizontal well and a construction method of the pipe column. The pipe column comprises a casing pipe, a bottom completion pipe column and a top tie-back pipe column, wherein the top tie-back pipe column comprises a plurality of stages of fracture construction groups, except a first stage of fracture construction group, each stage is provided with more than two sliding sleeves for providing fracturing fluid jetting outlets, the fracturing number is large, and two packers are arranged at two ends for sealing and isolating. Besides, a safety valve, a top packer and a circulating valve are further arranged on a tie-back oil pipe of the top tie-back pipe column; the safety valve is arranged in the position close to a well mouth and connected with a control terminal on the ground; the top packer is located between the safety valve and a hydraulic anchor; and the circulating valve is located between the hydraulic anchor and the top packer. According to the completion and fracture integrated pipe column of the offshore openhole horizontal well and the construction method of the pipe column, the fracture number of each fracture construction section multiplies under the condition that drop balls are not increased, so that the refining degree of fracture is improved, and oil or gas yield is increased; and meanwhile, requirements and limitation of offshore operation for safety and environment protection are met.

Description

The marine fracturing integrated tubing string of open-hole horizontal well completion and construction method thereof
Technical field
The present invention relates to the fracturing integrated tubing string of a kind of open-hole horizontal well completion and construction method thereof, particularly relate to the fracturing integrated tubing string of open-hole horizontal well completion and construction method thereof that pressing crack construction is carried out at a kind of applicable sea.
Background technology
Open-hole horizontal well staged fracturing technology is a kind of low-permeability oilfield yield-increasing technology, has the market demand widely.This technology hangs Open-Hole Section instrument by hanging packer, comprises open hole packer, sliding sleeve, setting ball seat, float shoe etc., and horizontal segment is separated into some sections, realizes pressure break respectively, produces simultaneously.Tieback string comprises insertion sealing and hydraulic anchor, inserts sealing and is inserted in the tieback sealing drum of hanging packer, realizes oil tube tieback, and hydraulic anchor prevents upwards wriggling of tubing string.Bottom completion tubular column and top tieback string have formed pressing crack construction service tube-column jointly, in pressing crack construction by pitching open sliding sleeve, staged fracturing, without cementing the well and perforating job, construction cost is low, operating efficiency is high.
When open-hole horizontal well staged fracturing technique is implemented in land, sleeve pipe pressure-bearing rank is high, allows sleeve tube pressure.And marine pressing crack construction is subject to the restriction of the factors such as safety, environmental protection, Platform Site condition, cannot adopt existing land open-hole horizontal well segmentation tubing string to carry out pressing crack construction completely.In addition, the fracturing integrated tubing string of above-mentioned open-hole horizontal well completion, owing to adopting common sliding in fracturing reform process, is limited by pitching amount of size, and technique does not reach the transformation requirement that becomes more meticulous of reservoir.And in construction manufacturing process, above-mentioned integrated pile tube closing well is controlled by the slide valve of production tree, has certain danger.
Summary of the invention
The invention provides the fracturing integrated tubing string of a kind of marine open-hole horizontal well completion and construction method thereof, one of its object is to realize in the situation that not increasing pitching number of times, the pressure break quantity of each pressing crack construction section that is multiplied, the degree thereby raising pressure break becomes more meticulous, has increased oil (gas) output.
Two of object is, for the feature of offshore oil and gas field, by the improvement to tubular column structure, realizes that casing section annular space is by effectively packing in process of production, and oil (gas, water) is gathered by oil pipe passage, guarantees sleeve pipe production with no pressure.
Three of object is that tubing string, in construction or manufacturing process, can be realized long-range closing well at any time, guarantees safety.
Four of object is, sets up backwash passage, and fast and effeciently de-plugging while guaranteeing to occur sand plug, enhances productivity; Set up pressure release passage, guarantee that oil jacket annular space is without building the pressure, safety in production.
In order to realize foregoing invention object, the technical scheme that the present invention takes is as follows:
The fracturing integrated tubing string of a kind of marine open-hole horizontal well completion, comprise sleeve pipe, bottom completion tubular column and top tieback string, described bottom completion tubular column and top tieback string are all positioned at sleeve pipe, described bottom completion tubular column comprises some grades of pressing crack construction groups that are connected on hanging packer and is positioned at oil pipe float shoe foremost, between pressing crack construction groups at different levels, by tubing nipple, contact successively, described top tieback string comprises tieback oil pipe, be arranged on insertion sealing and hydraulic anchor on tieback oil pipe, described insertion seals in the tieback sealing drum that is inserted into hanging packer and realizes oil tube tieback, it is characterized in that: described pressing crack construction group be take hanging packer as starting point, be followed successively by afterbody pressing crack construction group, pressing crack construction group and first order pressing crack construction group in the middle of some grades, described afterbody pressing crack construction group is crossed ball sliding sleeve, a pitching sliding sleeve and an open hole packer by i and is formed, wherein, and i >=1, described middle pressing crack construction group is crossed ball sliding sleeve, a pitching sliding sleeve and two open hole packers by j and is formed, wherein, j >=1, two open hole packers lay respectively at the two ends of pressing crack construction group, described first order pressing crack construction group is comprised of an open hole packer, pressure reduction sliding sleeve and a setting ball seat successively, on described tieback oil pipe, be also provided with safety valve, top packer and circulating valve, described safety valve is arranged near pithead position and is connected with the control terminal on ground, and described top packer is between safety valve and hydraulic anchor, and described circulating valve is between hydraulic anchor and top packer.
Preferably, described safety valve is connected by the pipe nipple that flows with the tieback oil pipe at two ends.
Preferably, described top packer is arranged near hydraulic anchor position.
Preferably, between described top packer and hanging packer
Preferably, described insertion is sealed into anchoring insertion seal.
The construction method of the described fracturing integrated tubing string of marine open-hole horizontal well completion, is characterized in that step is as follows:
Step 1, after finishing drilling, carries out drifting operation, for being lowered to bottom completion tubular column, carries out the logical preparation of well;
Step 2, is lowered to bottom completion tubular column according to designing requirement with drilling rod, and adjusts hanging packer and all open hole packers position;
Step 3, injects displacement fluid from bottom completion tubular column, mud in pit shaft is ejected to well head, until the liquid ejecting in pit shaft is consistent with displacement fluid;
Step 4, throws pressure break ball, and is pumped to setting ball seat position, and first setting all open hole packers are suppressed in drilling rod inside, rear continuation pressure foot envelope hanging packer;
Step 5, continues in drilling rod to suppress and gives up or adopt mechanical system to give up, and above carries drilling rod;
Step 6, suppresses in drilling rod, and check hanging packer sealing, trips out drilling rod after sealing is qualified;
Step 7, oil pipe connects successively insertion sealing, hydraulic anchor, circulating valve, top packer, current downflow pipe nipple, safety valve and upper mobile pipe nipple and forms top tieback string, and the top tieback string connecting is lowered to well head, insert sealing tieback in the tieback sealing drum of hanging packer, the control pipeline of safety valve is fixed on passed through tubing nipple, and draws well head and be connected with the control terminal on ground;
Step 8, oil pipe is suppressed pressure testing, and top tieback string is tested to envelope, and sleeve pipe is suppressed and is tested the sealing performance of inserting sealing;
Step 9, test insert the sealing performance of sealing qualified after, oil pipe is forced into opens pressure reduction sliding sleeve, then fracture well head is installed and is waited for pressure break;
Step 10, fracturing unit truck group is put, and after having connected, ground high pressure line is carried out to pressure testing, and pressing crack construction is carried out in qualified rear preparation;
Step 11, carries out first order pressing crack construction group pressing crack construction according to pressure break infusion program;
Step 12, after first order pressing crack construction completes, drop into next stage pressure break ball, open successively ball sliding sleeve and the pitching sliding sleeve excessively of next stage pressing crack construction group, pressure break ball finally drops on pitching sliding sleeve at the corresponding levels, then with maximum, allow discharge capacity pressure break, rapidly the corresponding stratum of each liquid outlet of this level is pressed off comprehensively, once add sand and complete this grade of fracturing work;
Step 13, according to method described in step 12, completes the fracturing work of all pressing crack construction group respective stages step by step;
Step 14, closing well after pressing crack construction completes, open flow discharge opeing after pressure diffusion;
Step 15, before putting into production, setting top packer, by top packer on it casing space and its setting of casing space isolated, in case insert seal failure, cause the casing pressure of top packer on it to increase to surpassing limit value;
Step 10 six, starts to produce.
Preferably, in whole fracturing work and manufacturing process, when there is sand plug, the de-plugging of controlled circulation valve inverse circular sand washing adapter.
Preferably, in process of production, the phenomenon that builds the pressure between top packer and hanging packer, opens circulating valve equilibrium pressure.
Preferably, in whole fracturing work and manufacturing process, as have an accident, the pressure of safety valve being controlled to pipeline by ground control terminal is laid down and can be closed oil pipe, realizes long-range quick closing well.
Compared to the prior art the present invention, has following beneficial effect:
By having connected top packer at the above oil pipe of anchoring insertion seal tieback section, when producing, top packer is setting, even if realized, insert sealing wear leakage, pressure is altered on also not understanding and is made top packer sleeve tube pressure on it, has met requirement and the restriction of operation on the sea for safety, environmental protection.
Except first order pressing crack construction group, every grade all has and is no less than two sliding sleeves fracturing fluid jet exit is provided, and makes seam quantity many, and two ends totally two packers packing is provided.Realization in the situation that not increasing pitching number of times, the crack quantity of each fracturing section that is multiplied, thus improve the degree that becomes more meticulous of fracturing work, realize volume increase.
In order to realize closing in time hoistway in safety zone, in the tubing string of top, increased storm valve, and the turbulent phenomenon causing for fear of the difference between oil pipe and safety valve internal diameter, safety valve is connected by the pipe nipple that flows with the oil pipe at two ends, and tubing string is played a protective role; Thereby by above-mentioned transformation, realize tubing string in construction or manufacturing process, can realize at any time long-range closing well, guarantee safety.
In order solving, in fracturing process, to occur that sand plug causes producing interruption, in the tubing string of top, also to have increased circulating valve, by controlled circulation valve is counter, circulate, set up backwash passage, can realize fast and effeciently de-plugging; In addition, all right build-up pressure balance channel of the circulating valve of increase, guarantees that down-hole is without building the pressure, safety in production.
The present invention, by oil field, existing land tubing string is transformed, makes its particularity that adapts to offshore oilfield, and increased the safety of producing simultaneously and improved production efficiency, and simple in structure, easy construction.By the application in experimental project, in the situation that not increasing cost of production, greatly improved field output, reduced the accident rate of producing, realized good economic benefit.
Accompanying drawing explanation
Fig. 1 is the fracturing integrated tubing string connection diagram of marine open-hole horizontal well completion.
Reference numeral: 1-safety valve, the mobile pipe nipple of 2-, 3-top packer, 4-circulating valve, 5-hydraulic anchor, 6-anchoring insertion seal, 7-hanging packer, 8-sleeve pipe, 9-oil pipe; 10,11,15,16,20,21-crosses ball sliding sleeve; 12,17,22-pitching sliding sleeve; 13,14,18,19,23,24-open hole packer; 25-pressure reduction sliding sleeve, the setting ball seat of 26-, 27-float shoe.
The specific embodiment
For making goal of the invention of the present invention, technical scheme and beneficial effect more cheer and bright, below in conjunction with accompanying drawing, embodiments of the invention are described, it should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can be combined mutually.
Fig. 1 is the fracturing integrated tubing string connection diagram of marine open-hole horizontal well completion.As shown in Figure 1, the fracturing integrated tubing string of a kind of marine open-hole horizontal well completion, comprise sleeve pipe 8, bottom completion tubular column and top tieback string, described bottom completion tubular column and top tieback string are all positioned at sleeve pipe 8, described bottom completion tubular column comprises by being connected to the level Four pressing crack construction group on hanging packer 7 and being positioned at oil pipe 9 float shoe 27 foremost, between described pressing crack construction group, by tubing nipple, contact, described top tieback string comprises tieback oil pipe and is arranged on anchoring insertion seal 6 and the hydraulic anchor 5 on tieback oil pipe, described anchoring insertion seal 6 is inserted in the sealing tie-back sleeve of hanging packer 7 and realizes oil tube tieback, take hanging packer 7 as starting point, be followed successively by afterbody pressing crack construction group, pressing crack construction group and first order pressing crack construction group in the middle of two-stage, described afterbody pressing crack construction group is crossed ball sliding sleeve 10,11 by 2, a pitching sliding sleeve 12 and an open hole packer 13 form, in the middle of described, pressing crack construction group is the second level and the third level, and wherein ball sliding sleeve 20,21 is crossed by 2 in the second level, a pitching sliding sleeve 22 and two open hole packers 19,23 form, and two open hole packers 19,23 lay respectively at the two ends of pressing crack construction group, wherein the third level crosses ball sliding sleeve 15,16 by 2, a pitching sliding sleeve 17 and two open hole packers 14,18 form, two open hole packers 14,18 lay respectively at the two ends of pressing crack construction group, described first order pressing crack construction group is comprised of an open hole packer 24, pressure reduction sliding sleeve 25 and a setting ball seat 26 successively, and in every grade of pressing crack construction group, pitching sliding sleeve is opened with the low-density ball of same size, on described tieback oil pipe, be also provided with safety valve 1, described safety valve 1 is arranged near pithead position and is connected with the control terminal on ground, and the line between safety valve 1 and control terminal is fixed in tubing coupling, and draws pithead position and fix.Described safety valve 1 is connected by the pipe nipple 2 that flows with the tieback oil pipe at two ends.The progression of the middle pressing crack construction group providing in the present embodiment is two-stage, what pressing crack construction group specifically discharged by oil reservoir design, FRACTURING DESIGN and taken into account pitching size and determine, need to guarantee to be that every one-level construction group is calculated formation fracture pressure when geological reservoir design substantially equal, can simultaneously complete pressure break.The ball sliding sleeve number of crossing in every one-level pressing crack construction group does not limit, can be according to designing requirement quantification, i.e. and i >=1, j >=1, i and j do not equate or not etc.In order to strengthen sealing effectiveness, in the present embodiment, insert Sealing selection anchoring insertion seal 6, in the situation that pressing crack construction requirement is lower, also can select the insertion sealing of other types.
Referring to Fig. 1, on the tieback oil pipe of described top tieback string, top packer 3 is installed, 3 times deep degree of described top packer are large compared with safety valve 1, between safety valve 1 and hydraulic anchor 5 and near hydraulic anchor 5 positions.
Referring to Fig. 1, on the tieback oil pipe of described top tieback string, circulating valve 4 is installed, described circulating valve 4 is connected between hydraulic anchor 5 and top packer 3.
The construction method of the above-mentioned fracturing integrated tubing string of marine open-hole horizontal well completion, step is as follows:
Step 1, after finishing drilling, carries out drifting operation, for being lowered to bottom completion tubular column, carries out the logical preparation of well; Described drifting work comprises with pipeline scraper scrapes sleeve pipe, with drift size gauge tool, leads to sleeve pipe, uses drill bit drifting, with single watermelon peel, simulates tubing string drifting, with two watermelon peels, simulates tubing string drifting etc.;
Step 2, is lowered to bottom completion tubular column according to designing requirement with drilling rod, and adjusts hanging packer 7 and all open hole packers position; In the present embodiment, the concrete connection of bottom completion tubular column is as follows:
Figure BDA0000440849740000062
Step 3, injects 2% KCL displacement fluid from bottom completion tubular column, mud in pit shaft is ejected to well head, until the liquid ejecting in pit shaft is consistent with displacement fluid;
Step 4, throws 1.25 " low-density ball, and cementing truck is with 0.5m 3-0.6m 3the displacement pump release of/min is to setting ball seat 26 positions, and first setting all open hole packers are suppressed in drilling rod inside, then continues to improve the setting hanging packer 7 of pressure;
Step 5, continues in drilling rod to suppress and gives up or adopt mechanical system to give up, and above carries drilling rod;
Step 6, suppresses in drilling rod, check hanging packer 7 sealings, and voltage stabilizing 5min, it is qualified that pressure drop is no more than 0.5MPa, after sealing is qualified, trips out drilling rod after having possessed bar strip part; Open head valve, observe and whether have overflow phenomena, the wellhead assembly of dismantling after confirmation well control safety;
Step 7, the oil pipe that calculating need to be gone into the well and tool length, adjust running string combination on demand, after definite being of convenient length; Then by following connected mode, connect top tieback string,
Figure BDA0000440849740000071
Figure BDA0000440849740000072
Figure BDA0000440849740000073
and the top tieback string connecting is lowered to well head, and anchoring insertion seal 6 grappling tiebacks are in the tieback sealing drum of hanging packer 7, and the control pipeline of safety valve 1 is fixed on passed through tubing nipple and draws well head and is connected with the control terminal on ground; Christmas tree is installed;
Step 8, oil pipe is suppressed pressure testing, and top tieback string is tested to envelope, and sleeve pipe is suppressed the sealing performance of testing anchoring insertion seal 6;
Step 9, test the sealing performance of anchoring insertion seal 6 qualified after, oil pipe is forced into opens pressure reduction sliding sleeve 25, then fracture well head is installed and is waited for pressure break;
Step 10, fracturing unit truck group is put, and connects ground high and low pressure pipeline, and oil pipe, sleeve pipe connect respectively Sensor monitoring operation pressure.Surface line circulation, high pressure line, the pressure testing of balance pipeline, pressing crack construction is carried out in qualified rear preparation; While carrying out pressing crack construction step by step, construction casing is first beaten equilibrium pressure, sleeve pipe pressure limiting 20MPa;
Step 11, carries out first order pressing crack construction group pressing crack construction according to pressure break infusion program;
Step 12, the first order add sand complete after after sand concentration reduces, release pump truck is suppressed, from well head plug valve, drop into 1.50 " low-density ball; open successively ball sliding sleeve and the pitching sliding sleeve excessively of next stage pressing crack construction group, pressure break ball finally drops on pitching sliding sleeve at the corresponding levels, then allows discharge capacity pressure break with maximum; rapidly the corresponding stratum of each liquid outlet of this level is pressed off comprehensively, once add sand and complete this grade of fracturing work;
Step 13, according to method described in step 12, completes the fracturing work of the corresponding section of the second level and the third level and afterbody pressing crack construction group step by step;
Step 14, closing well after pressing crack construction completes, open flow discharge opeing after pressure diffusion;
Step 15, before putting into production, setting top packer 3, by top packer 3 on it casing space and its setting of casing space isolated, in case insert seal failure, cause top packer 3 casing pressure on it to increase to surpassing limit value;
Step 10 six, starts to produce.
In whole fracturing work and manufacturing process, when there is sand plug, the 4 inverse circular sand washing adapter de-pluggings of controlled circulation valve.
In process of production, the phenomenon that builds the pressure between top packer 3 and hanging packer 7, opens circulating valve 4 equilibrium pressures.
In whole fracturing work and manufacturing process, as have an accident, the pressure of safety valve 1 being controlled to pipeline by ground control terminal is laid down and can be closed oil pipe, realizes long-range quick closing well.
Although disclosed embodiment as above, the embodiment that its content just adopts for the ease of understanding technical scheme of the present invention, is not intended to limit the present invention.Technician in any the technical field of the invention; do not departing under the prerequisite of disclosed core technology scheme; can in the form of implementing and details, make any modification and variation; but the protection domain that the present invention limits, the scope that still must limit with appending claims is as the criterion.

Claims (8)

1. the fracturing integrated tubing string of marine open-hole horizontal well completion, comprise sleeve pipe (8), bottom completion tubular column and top tieback string, described bottom completion tubular column and top tieback string are all positioned at sleeve pipe (8), described bottom completion tubular column comprises some grades of pressing crack construction groups that are connected on hanging packer (7) and is positioned at oil pipe float shoe (27) foremost, between pressing crack construction groups at different levels, by tubing nipple, contact successively, described top tieback string comprises tieback oil pipe, be arranged on insertion sealing and hydraulic anchor (5) on tieback oil pipe, described insertion seals in the tieback sealing drum that is inserted into hanging packer (7) and realizes oil tube tieback, it is characterized in that: it is starting point that described pressing crack construction group be take hanging packer (7), be followed successively by afterbody pressing crack construction group, pressing crack construction group and first order pressing crack construction group in the middle of some grades, described afterbody pressing crack construction group is crossed ball sliding sleeve, a pitching sliding sleeve and an open hole packer by i and is formed, wherein, and i >=1, described middle pressing crack construction group is crossed ball sliding sleeve, a pitching sliding sleeve and two open hole packers by j and is formed, wherein, j >=1, two open hole packers lay respectively at the two ends of each middle pressing crack construction group, described first order pressing crack construction group is comprised of an open hole packer, pressure reduction sliding sleeve (25) and a setting ball seat (26) successively, on described tieback oil pipe, be also provided with safety valve (1), top packer (3) and circulating valve (4), described safety valve (1) is arranged near pithead position and is connected with the control terminal on ground, described top packer (3) is positioned between safety valve (1) and hydraulic anchor (5), and described circulating valve (4) is positioned between hydraulic anchor (5) and top packer (3).
2. the fracturing integrated tubing string of marine open-hole horizontal well completion as claimed in claim 1, is characterized in that: described safety valve (1) is connected by the pipe nipple (2) that flows with the tieback oil pipe at two ends.
3. the fracturing integrated tubing string of marine open-hole horizontal well completion as claimed in claim 1, is characterized in that: described top packer (3) is arranged near hydraulic anchor (5) position.
4. the fracturing integrated tubing string of marine open-hole horizontal well completion as described in claim 1 or 2 or 3, is characterized in that: described insertion is sealed into anchoring insertion seal (6).
5. the construction method of the fracturing integrated tubing string of marine open-hole horizontal well completion as described in claim 1 to 4 any one, is characterized in that step is as follows:
Step 1, after finishing drilling, carries out drifting operation, for being lowered to bottom completion tubular column, carries out the logical preparation of well;
Step 2, is lowered to bottom completion tubular column according to designing requirement with drilling rod, and adjusts hanging packer (7) and all open hole packers position;
Step 3, injects displacement fluid from bottom completion tubular column, mud in pit shaft is ejected to well head, until the liquid ejecting in pit shaft is consistent with displacement fluid;
Step 4, throws pressure break ball, and is pumped to setting ball seat (26) position, and first setting all open hole packers are suppressed in drilling rod inside, rear continuation pressure foot envelope hanging packer (7);
Step 5, continues in drilling rod to suppress and gives up or adopt mechanical system to give up, and above carries drilling rod;
Step 6, suppresses in drilling rod, and check hanging packer (7) sealing, trips out drilling rod after sealing is qualified;
Step 7, oil pipe connects successively insertion sealing, hydraulic anchor (5), circulating valve (4), top packer (3), current downflow pipe nipple, safety valve (1) and upper mobile pipe nipple and forms top tieback string, and the top tieback string connecting is lowered to well head, insert sealing tieback in the tieback sealing drum of hanging packer (7), the control pipeline of safety valve (1) is fixed on passed through tubing nipple, and draws well head and be connected with the control terminal on ground;
Step 8, oil pipe is suppressed pressure testing, and top tieback string is tested to envelope, and sleeve pipe is suppressed and is tested the sealing performance of inserting sealing;
Step 9, test insert the sealing performance of sealing qualified after, oil pipe is forced into opens pressure reduction sliding sleeve (25), then fracture well head is installed and is waited for pressure break;
Step 10, fracturing unit truck group is put, and after having connected, ground high pressure line is carried out to pressure testing, and pressing crack construction is carried out in qualified rear preparation;
Step 11, carries out first order pressing crack construction group pressing crack construction according to pressure break infusion program;
Step 12, after first order pressing crack construction completes, drop into next stage pressure break ball, open successively ball sliding sleeve and the pitching sliding sleeve excessively of next stage pressing crack construction group, pressure break ball finally drops on pitching sliding sleeve at the corresponding levels, then with maximum, allow discharge capacity pressure break, rapidly the corresponding stratum of each liquid outlet of this level is pressed off comprehensively, once add sand and complete this grade of fracturing work;
Step 13, according to method described in step 12, completes the fracturing work of all pressing crack construction group respective stages step by step;
Step 14, closing well after pressing crack construction completes, open flow discharge opeing after pressure diffusion;
Step 15, before putting into production, setting top packer (3), by top packer (3) on it casing space and its setting of casing space isolated, in case insert seal failure, cause its upper casing pressure of top packer (3) to increase to over limit value;
Step 10 six, starts to produce.
6. the construction method of the fracturing integrated tubing string of marine open-hole horizontal well completion according to claim 5, is characterized in that: in whole fracturing work and manufacturing process, and when there is sand plug, controlled circulation valve (4) inverse circular sand washing adapter de-plugging.
7. the construction method of the fracturing integrated tubing string of marine open-hole horizontal well completion according to claim 6, it is characterized in that: in process of production, the phenomenon that builds the pressure between top packer (3) and hanging packer (7), opens circulating valve (4) equilibrium pressure.
8. the construction method of the fracturing integrated tubing string of marine open-hole horizontal well completion according to claim 6, it is characterized in that: in whole fracturing work and manufacturing process, as have an accident, by ground control terminal, the pressure of safety valve (1) control pipeline is laid down and can be closed oil pipe, realize long-range quick closing well.
CN201310701600.6A 2013-12-18 2013-12-18 Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column Pending CN103643931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310701600.6A CN103643931A (en) 2013-12-18 2013-12-18 Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310701600.6A CN103643931A (en) 2013-12-18 2013-12-18 Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column

Publications (1)

Publication Number Publication Date
CN103643931A true CN103643931A (en) 2014-03-19

Family

ID=50249202

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310701600.6A Pending CN103643931A (en) 2013-12-18 2013-12-18 Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column

Country Status (1)

Country Link
CN (1) CN103643931A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179485A (en) * 2014-09-02 2014-12-03 安东石油技术(集团)有限公司 Cementation and fracture technique string and cementation and fracture technique process
CN106437618A (en) * 2016-09-06 2017-02-22 中国石油天然气股份有限公司 Subsection well completion tubular column, subsection reforming tubular column and oil well reforming device
CN110847876A (en) * 2019-11-28 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 Open hole packer staged fracturing string with accurate crack arrangement and use method
CN110872944A (en) * 2018-09-04 2020-03-10 中国石油天然气股份有限公司 Fracturing string and horizontal well subsection repeated fracturing operation method
CN111255427A (en) * 2020-01-16 2020-06-09 中国石油天然气股份有限公司 Method for mechanical separate-layer fracturing of oil well
CN112081535A (en) * 2019-06-14 2020-12-15 中国石油化工股份有限公司 Ultra-deep high-sulfur-content gas well completion pipe string and construction method thereof
CN112513421A (en) * 2018-07-27 2021-03-16 贝克休斯控股有限责任公司 Distributed fluid injection system for a wellbore
CN112943161A (en) * 2021-01-14 2021-06-11 中国石油天然气股份有限公司 Side drilling is exempted from to hang and can be lost hand well cementation well completion device
CN113374461A (en) * 2021-07-12 2021-09-10 山西沁盛煤层气作业有限责任公司 Method for dragging underground pipe string under pressure
CN114856497A (en) * 2022-04-28 2022-08-05 中海油田服务股份有限公司 Drainage and gas production experimental device for gas-filled pipeline
CN114922600A (en) * 2022-05-13 2022-08-19 中海油能源发展股份有限公司 Fracturing production integrated process pipe column for throwing and fishing electric pump well and operation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249628A (en) * 1992-09-29 1993-10-05 Halliburton Company Horizontal well completions
US20030121663A1 (en) * 2001-12-31 2003-07-03 Xiaowei Weng Method and apparatus for placement of multiple fractures in open hole wells
CN102282562A (en) * 2009-01-13 2011-12-14 埃克森美孚上游研究公司 Optimizing well operating plans
CN103015955A (en) * 2012-12-28 2013-04-03 中国石油集团渤海钻探工程有限公司 Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof
CN103061684A (en) * 2013-01-21 2013-04-24 中国石油集团渤海钻探工程有限公司 Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof
CN103075138A (en) * 2013-01-10 2013-05-01 中国海洋石油总公司 Staged fracturing and staged oil production integrated string for horizontal well
CN103277079A (en) * 2013-06-04 2013-09-04 中国海洋石油总公司 String and fracturing construction method for horizontal well fracturing completion
CN103321626A (en) * 2013-07-11 2013-09-25 中国海洋石油总公司 Fracture and sand prevention integrated completion pipe string and application method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249628A (en) * 1992-09-29 1993-10-05 Halliburton Company Horizontal well completions
US20030121663A1 (en) * 2001-12-31 2003-07-03 Xiaowei Weng Method and apparatus for placement of multiple fractures in open hole wells
CN102282562A (en) * 2009-01-13 2011-12-14 埃克森美孚上游研究公司 Optimizing well operating plans
CN103015955A (en) * 2012-12-28 2013-04-03 中国石油集团渤海钻探工程有限公司 Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof
CN103075138A (en) * 2013-01-10 2013-05-01 中国海洋石油总公司 Staged fracturing and staged oil production integrated string for horizontal well
CN103061684A (en) * 2013-01-21 2013-04-24 中国石油集团渤海钻探工程有限公司 Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof
CN103277079A (en) * 2013-06-04 2013-09-04 中国海洋石油总公司 String and fracturing construction method for horizontal well fracturing completion
CN103321626A (en) * 2013-07-11 2013-09-25 中国海洋石油总公司 Fracture and sand prevention integrated completion pipe string and application method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
中国石油学会石油工程专业委员会海洋工程工作部: "《海洋石油工程技术论文(第四集)》", 31 August 2012 *
朱正喜等: "水平井裸眼完井分段压裂技术研究", 《石油矿场机械》 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179485A (en) * 2014-09-02 2014-12-03 安东石油技术(集团)有限公司 Cementation and fracture technique string and cementation and fracture technique process
CN106437618A (en) * 2016-09-06 2017-02-22 中国石油天然气股份有限公司 Subsection well completion tubular column, subsection reforming tubular column and oil well reforming device
CN112513421A (en) * 2018-07-27 2021-03-16 贝克休斯控股有限责任公司 Distributed fluid injection system for a wellbore
CN112513421B (en) * 2018-07-27 2023-11-28 贝克休斯控股有限责任公司 Distributed fluid injection system for a wellbore
US11767743B2 (en) 2018-07-27 2023-09-26 Baker Hughes, A Ge Company, Llc Distributed fluid injection system for wellbores
CN110872944A (en) * 2018-09-04 2020-03-10 中国石油天然气股份有限公司 Fracturing string and horizontal well subsection repeated fracturing operation method
CN112081535A (en) * 2019-06-14 2020-12-15 中国石油化工股份有限公司 Ultra-deep high-sulfur-content gas well completion pipe string and construction method thereof
CN110847876A (en) * 2019-11-28 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 Open hole packer staged fracturing string with accurate crack arrangement and use method
CN111255427A (en) * 2020-01-16 2020-06-09 中国石油天然气股份有限公司 Method for mechanical separate-layer fracturing of oil well
CN112943161A (en) * 2021-01-14 2021-06-11 中国石油天然气股份有限公司 Side drilling is exempted from to hang and can be lost hand well cementation well completion device
CN113374461A (en) * 2021-07-12 2021-09-10 山西沁盛煤层气作业有限责任公司 Method for dragging underground pipe string under pressure
CN114856497A (en) * 2022-04-28 2022-08-05 中海油田服务股份有限公司 Drainage and gas production experimental device for gas-filled pipeline
CN114856497B (en) * 2022-04-28 2024-04-09 中海油田服务股份有限公司 Inflation pipeline drainage gas production experimental device
CN114922600A (en) * 2022-05-13 2022-08-19 中海油能源发展股份有限公司 Fracturing production integrated process pipe column for throwing and fishing electric pump well and operation method thereof

Similar Documents

Publication Publication Date Title
CN103643931A (en) Completion and fracture integrated pipe column of offshore openhole horizontal well and construction method of pipe column
CN101864921B (en) Well completion and oil production string of horizontal well and well completion and oil production processes thereof
CN201165866Y (en) Horizontal well division and combination extracting pipe column
CN201273188Y (en) Integrated water exploration pipe column of casing tube well-completion horizontal well
CN109653707B (en) Method for dewatering and increasing oil by filling packing body particles in oil and gas well of fractured oil and gas reservoir
CN103015955A (en) Open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and fracturing method thereof
CN104179485B (en) Cementation and fracture technique string
CN103061684A (en) Open-hole horizontal well sectional multi-cluster uniform acidizing tubular column and acidizing method thereof
CN201705276U (en) Well completion and flow string of horizontal well
CN106050199A (en) Synthetic drainage and gas production device and method
CN101775977B (en) Dual-tube injection well safety production string
CN105952378A (en) Tree-shape structure well drilling and completion and yield increasing method
CN204703876U (en) A kind of bridge-type concentric separated-injection tubing string
CN205858311U (en) A kind of bore hole staged fracturing completion tubular column
CN202832438U (en) Deep well long-lasting separated layer water injection tubular column
CN103452531A (en) Method for underbalanced tubing descending, non-well-killing gas lifting, rotary pumping, pump maintaining and tubing maintaining
CN208830969U (en) Oil recovery and water injection string
CN210134883U (en) Injection-production integrated pipe column in same well
CN112081535A (en) Ultra-deep high-sulfur-content gas well completion pipe string and construction method thereof
CN104563872B (en) Blockage resisting self-filling-type float collar
CN201003397Y (en) Controllable throttling controller
CN210530815U (en) Underground gas-liquid separate extraction device suitable for gas well
CN103470233B (en) A kind of heavy crude reservoir natural gas huff and puff oil recovery process system and oil production method
CN105298443A (en) Oil pipe float valve and blowout prevention, gas lift and fracture combined operation method for underbalance well completion oil pipe descending
CN105781506B (en) A kind of method of oil well delamination water filling

Legal Events

Date Code Title Description
PB01 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: 20140319