CN204266939U - A kind of water and oil control second completion pipe string combination - Google Patents

A kind of water and oil control second completion pipe string combination Download PDF

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Publication number
CN204266939U
CN204266939U CN201420479365.2U CN201420479365U CN204266939U CN 204266939 U CN204266939 U CN 204266939U CN 201420479365 U CN201420479365 U CN 201420479365U CN 204266939 U CN204266939 U CN 204266939U
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CN
China
Prior art keywords
control
water
pipe
completion
control water
Prior art date
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CN201420479365.2U
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Chinese (zh)
Inventor
赵旭
侯倩
段友智
何祖清
姚志良
刘欢乐
朱明�
贺英
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中国石油化工股份有限公司
中国石油化工股份有限公司石油工程技术研究院
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Priority to CN201420479365.2U priority Critical patent/CN204266939U/en
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Publication of CN204266939U publication Critical patent/CN204266939U/en

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Abstract

The utility model discloses a kind of water and oil control second completion pipe string combination.Be provided with control water pipe nipple in described second completion pipe string combination, control water pipe nipple is arranged between blind pipe, and packer, blind pipe, control water pipe nipple, blind pipe connect and compose combination successively; Described control water pipe nipple comprises sand control part and control water section.Completion system easy construction of the present utility model, economical and efficient, safe and reliable, effectively can play the effect of control water, steady oil, sand control, efficient balance production profile, solve the exploitation of current oilfield horizontal well layer in water logging problem.

Description

A kind of water and oil control second completion pipe string combination
Technical field
The utility model relates to the completion field in drilling well, says further, relates to a kind of water and oil control second completion pipe string combination.
Background technology
At present, domestic a lot of oil field enters mid-later development phase, and along with the prolongation of horizontal well development time, limit, end water problems have more and more become the important factor in order that is suppressed Oil/gas Well output, and water logging problem day is aobvious outstanding.
Existing level well secondary water control technique generally adopts the mode of first water detection water blockoff again, namely under production status, measuring instrument is entered by under cable, measure each layer position water outlet situation, then for water exit interval carry out machinery card envelope or blocking agent method for blocking moisture to reduce horizontal well.Water detection, machinery block envelope or blocking agent method for blocking complicated construction technique, operation is many, task difficulty is large, and multiple working procedure is constructed, and technical requirements is high, often cause and do over again, secondary operation process etc., construction risk is large, have high input, efficient low, economical and effective or deficiency in economic performance can not be realized.Its main cause one is that water detection technology completely truly can not reflect water exit interval, is difficult to confirm oil-water interfaces, can not reflect whether non-water exit end has fuel-displaced potentiality; Two is that machinery card envelope or blocking agent plugging action radius are little, and in layer, water can be formed very soon and stream, and card or stifled measure were lost efficacy; Three is damage near wellbore zone reservoir, and reservoir oleic permeability can be caused to reduce
Utility model content
For solving produced problem in prior art, the utility model provides a kind of water and oil control second completion system.Fundamentally overcome the defect of prior art, efficient balance production profile, solve current oilfield horizontal well exploitation layer in water logging problem, improve the standard well exploitation effect and oil field whole development benefit.
The purpose of this utility model is to provide a kind of water and oil control second completion pipe string combination.
Control water pipe nipple is provided with in described second completion pipe string combination,
Control water pipe nipple is arranged between blind pipe, and packer, blind pipe, control water pipe nipple, blind pipe connect and compose combination successively;
Described control water pipe nipple comprises sand control part and control water section;
Described sand control part comprises top connection, central tube, combination of screens, banjo;
Central tube is outside equipped with the two-layer rib mesh support screen of axis and radial equipartition, forms the passage of direction of flow control water section; Central tube two ends connect top connection and banjo respectively, and banjo can realize sand control part with control water section in the Fast Installation of Oil Field and replacing;
Described control water section comprises overcoat, base tube, throttling element;
Throttling element is arranged on outside base tube, and overcoat is enclosed within outside throttling element and base tube;
Overcoat is positioned at the outermost of device, and play the effect of protection internal construction, base tube is provided with water conservancy diversion conduit and projection along the front end of fluid inflow direction, is provided with remittance groove at the middle part of base tube, and be provided with embedded groove in the centre importing groove, throttling element is arranged in embedded groove;
Throttling element comprises flow channel, eddy flow tray and throttle nozzle;
Sand control part is connected by banjo with control water section.
Wherein,
The quantity of described control water pipe nipple is 1-4.
Remittance groove and embedded groove are arranged around base tube, a base tube are arranged 4 and import grooves and embedded groove.
Second completion pipe string combination also comprises centralizer, and centralizer is enclosed within outside blind pipe or control water pipe nipple.
Length≤the 5m of control water pipe nipple; Length≤the 4m of control water pipe nipple sand control part.
The concrete technical scheme of the utility model is as follows:
Completion tubular string is provided with control water pipe nipple, control water short circuit is arranged on to be put between blind pipe, according to the size of pressed holding position by flow in the Reservoir Section of packer institute packing, arranges control water pipe nipple 1-4.
Length≤the 5m of a control water pipe nipple, generally by the least significant end being placed on one section of blind pipe, general after control water pipe nipple also have one section of blind pipe, is packer after blind pipe.Part between two packers is called a packing section, each packing segment length >=50m, the quantity by the control water pipe nipple put is determined according to the size of reservoir Liquid output in each packing section, generally be no less than 1 every section, each control water pipe nipple uniformly by by the middle of the blind pipe be placed within a section, with blind pipe alternately by putting.According to domestic horizontal well yield, by putting control water pipe nipple 1-4 in every section of second completion tubing string.
Described control water pipe nipple comprises sand control part and control water section;
Sand control part comprises top connection, central tube, combination of screens, banjo; Wherein central tube is processed with the two-layer rib mesh support screen of axis and radial equipartition, forms the passage of direction of flow control water section; Control water section comprises overcoat, base tube, throttling element; Base tube is the important component part of whole ramp metering device, its front end is provided with water conservancy diversion conduit and projection, water conservancy diversion conduit plays the object imported by the fluid entered in ramp metering device, protruding mainly playing supports the effect that overcoat ensures whole water control device intensity, be provided with remittance groove in the middle-end of base tube, be provided with embedded groove in the centre importing groove, embedded groove is mainly used to by putting throttle control, remittance groove and embedded groove are arranged around base tube, and a base tube arranges 4.Throttling element is the core component of whole device control water section, it at least comprises a flow channel, an eddy flow tray and a throttle nozzle, its operating principle causes the difference of flowing according to oil with the density of water and the difference of viscosity, because the difference of flowing causes energy loss in oil and the conversion process of water in eddy flow process between pressure energy from kinetic energy different, thus realize the difference of the pressure drop of high choke pressure drop and oil and water, reach chance water to produce high throttle resistance, meet the low throttle resistance of oil generation, self adaptation adjusts the object of Flow Control water.Whole control water pipe nipple is not containing movable part.
Sand control part is linked together by banjo, central tube, overcoat, base tube with control water section.
The technical scheme of the water and oil control second completion tubing string that the utility model relates to is: be spaced by the blind pipe of different length and control water pipe nipple at net horizontal section, coordinate external packer of pipe packing completion tubular string and bore hole annulus, comprehensive utilization blind pipe, control water pipe nipple and the combination of external packer of pipe reach the segmentation of horizontal well and the effect delaying bottom water coning, implementation method is directly connected to by external packer of pipe on blind pipe (also external packer of pipe to be directly enclosed within blind pipe), by blind pipe and control water pipe nipple according to the textural association of alternate combinations after direct G.I.H; Or with pipeline scraper drifting and well-flushing, then under enter completion tubular column.Packer can adopt oil and water contact expansible formula packer, also can adopt pitching opening type packer.Then need to enter Posterior circle as adopted oil and water contact expansible formula packer under completion tubular column and enter light diesel or clear water soaks packer, promote rubber swelling, soak time is generally more than 72 hours.As adopted pitching opening type packer, need under enter completion tubular column after, build the pressure to 10MPa set packer, after packer setting, build the pressure to 20MPa and suppress de-ball seat.
Blind pipe refers to the communicating passage that not have other with the external world here and there is the pipe of flow channel inside, middle oil pipe is used to can be used to be used as blind pipe, packer adopts meets oil chance water Self-expandable packer or pitching opening type packer, for packing reservoir, the packing of horizontal well horizontal segment is become multistage, prevents water breakthrough.Control water pipe nipple adopts active self-adaptive controlled water pipe nipple, drives can regulate according to the change entering pipe nipple oil mass and the water yield Liquid output entering output central tube voluntarily without the need to manual intervention and electricity/liquid, balance production profile.Centralizer adopts spring centralizer or other any type of centralizer, and avoid packer and be equidistantly placed in whole completion system, object makes tubing string placed in the middle.
At the net horizontal section of non-payzone, under enter blind pipe and packer combination, the non-payzone section of packing, keeps the strata pressure of non-payzone section, to compensate the pressure loss of producing zone.For producing zone, under enter packer and self-adaptive controlled water pipe nipple combination, it produces hardly for the oil-producing formation in producing zone or only produces very little resistance, then produces larger resistance for the Water Flooding Layer in producing zone.This completion tubular column can enter under a formula, does not need special operation, be applicable to open hole well, cased well and early stage tube exterior subsection screen casing well etc.
The key component of completion system of the present utility model is the self-adaptive controlled water pipe nipple initiatively can controlling water, comprises sand control part and control water section.Sand control part mainly comprises top connection, central tube, combination of screens, banjo; Wherein central tube is processed with the two-layer rib mesh support screen of axis and radial equipartition, forms the passage of direction of flow control water section.Control water section comprises overcoat, base tube, throttling element; Sand control part is linked together by banjo, central tube, overcoat, base tube with control water section, namely leaves fluid passage, has again the feature that sealing is reliable, facilitate spot replace simultaneously.The core component of control water section is throttling element, can change the size of the resistance of convection cell according to the difference of fluid properties voluntarily.In control water pipe nipple, fluid can only enter flow string by throttling element, fluid flow path is: first formation fluid flows through the annular space of screen cloth and central tube after screen cloth enters, then the jointing of sand control part and control water section is flowed through, enter the throttling element of control water section, tune stream through throttling element finally enters in flow string, reaches water and oil control object.
Effect of the present utility model:
(1) the self adaptation water-control sieve tube pipe nipple involved by the utility model, need not manual intervention and electricity/hydraulic power is provided, get final product the type of flow of autonomous change structure inside, " throttling " low-viscosity fluid, " increasing income " High-Sr granite, thus balanced production profile.
(2) completion tubular column involved by the utility model enters under being convenient to and trips out, and a tubing string can realize the output of water production control section, promotes the object of produce oil section output;
(3) completion system involved by the utility model lays water-control sieve tube completely in horizontal production fluid section, without water detection, and any position water outlet all automatic control waters, period of validity is long, and need not because of newly-increased EXIT POINT, and repeatedly water blockoff.
(4) namely the second completion system that the utility model proposes can be used for large pump extract well second completion, also can be used for displacement of reservoir oil by filling water extract well second completion.
Accompanying drawing explanation
Fig. 1 is water and oil control second completion pipe string combination schematic diagram
Fig. 2 is control water pipe nipple and schematic of fluid flow
Description of reference numerals:
1-flow string; 2-packer; 3-controls water pipe nipple; 4-safety joint;
5-centralizer; 6-blind pipe; 7-reservoir; 10-sand control part;
11-top connection; 12-central tube; 13-combination of screens; 14-banjo;
15-controls water section; 16-overcoat; 17 – throttling elements; 18-base tube
Detailed description of the invention
Below in conjunction with embodiment, further illustrate the utility model.
Embodiment
As shown in Figure 1, a kind of water and oil control second completion pipe string combination.
Control water pipe nipple 3 is provided with in described second completion pipe string combination,
Control water pipe nipple 3 is arranged between blind pipe 6, and packer, blind pipe, control water pipe nipple, blind pipe connect and compose combination successively;
Described control water pipe nipple 3 comprises sand control part 10 and control water section 15; As shown in Figure 2,
Described sand control part 10 comprises top connection 11, central tube 12, combination of screens 13, banjo 14;
Central tube 12 is outside equipped with the two-layer rib mesh support screen of axis and radial equipartition, forms the passage of direction of flow control water section; Central tube 12 two ends connect top connection 11 and banjo 14 respectively;
Described control water section 15 comprises overcoat 16, base tube 18, throttling element 17;
Throttling element 17 is arranged on outside base tube 18, and overcoat 16 is enclosed within outside throttling element 17 and base tube 18;
Overcoat 16 is positioned at the outermost of device, play the effect of protection internal construction, base tube 18 is provided with water conservancy diversion conduit and projection along the front end of fluid inflow direction, is provided with remittance groove at the middle part of base tube, be provided with embedded groove in the centre importing groove, throttling element is arranged in embedded groove;
Throttling element 17 comprises flow channel, eddy flow tray and throttle nozzle;
Sand control part 10 is connected by banjo 14 with control water section 15.
Second completion pipe string combination also comprises centralizer, and centralizer is enclosed within outside busy pipe or control water pipe nipple.
Have employed 5 packers in an embodiment altogether by the packing of whole horizontal well horizontal segment in order to 4 sections, by be divided into from left to right in figure 4 sections: be called first paragraph, second segment, the 3rd section, the 4th section, first paragraph, in the 3rd section, the 4th section respectively by having put a control water pipe nipple.Second segment because be non-production fluid section therefore not by dress water control device, mainly play packing reservoir and reduce the effect that other reservoirs are affected.The quantity of blind pipe mainly has relation with the length of packing section, the application main oil pipe that adopts in current scene serves as blind pipe, the length of an oil pipe the chances are about 9.5 meters, as set first paragraph be about 80 meters, second segment be about 50 meters, the 3rd segment length about 70 meters, the 4th segment length about 100 meters, so first paragraph needs to install blind pipe 7, second segment and needs blind pipe 5, the 3rd section of needs blind pipe 6, the 4th section needs blind pipe 9.Average two blind pipes centralizer, first paragraph needs to install centralizer 4, and second segment needs to install centralizer 3, and centralizer 4 installed by the 3rd section of needs, and centralizer 5 installed by the 4th section of needs.

Claims (8)

1. a water and oil control second completion pipe string combination, is characterized in that:
Control water pipe nipple is provided with in described second completion pipe string combination,
Control water pipe nipple is arranged between blind pipe, and packer, blind pipe, control water pipe nipple, blind pipe connect and compose combination successively.
2. water and oil control second completion pipe string combination as claimed in claim 1, is characterized in that:
Described control water pipe nipple comprises sand control part and control water section;
Described sand control part comprises top connection, central tube, combination of screens, banjo;
Central tube is outside equipped with the two-layer rib mesh support screen of axis and radial equipartition, forms the passage of direction of flow control water section; Central tube two ends connect top connection and banjo respectively;
Described control water section comprises overcoat, base tube, throttling element;
Throttling element is arranged on outside base tube, and overcoat is enclosed within outside throttling element and base tube;
Overcoat is positioned at the outermost of device, and play the effect of protection internal construction, base tube is provided with water conservancy diversion conduit and projection along the front end of fluid inflow direction, is provided with remittance groove at the middle part of base tube, and be provided with embedded groove in the centre importing groove, throttling element is arranged in embedded groove;
Throttling element comprises flow channel, eddy flow tray and throttle nozzle;
Sand control part is connected by banjo with control water section.
3. water and oil control second completion pipe string combination as claimed in claim 1, is characterized in that:
The quantity of described control water pipe nipple is 1-4.
4. water and oil control second completion pipe string combination as claimed in claim 2, is characterized in that:
Remittance groove and embedded groove are arranged around base tube, a base tube are arranged 4 and import grooves and embedded groove.
5. water and oil control second completion pipe string combination as claimed in claim 1, is characterized in that:
Second completion pipe string combination comprises centralizer, and centralizer is enclosed within outside blind pipe or control water pipe nipple.
6. water and oil control second completion pipe string combination as claimed in claim 2, is characterized in that:
Length≤the 4m of control water pipe nipple sand control part.
7. water and oil control second completion pipe string combination as claimed in claim 1, is characterized in that:
Length≤the 5m of control water pipe nipple.
8. water and oil control second completion pipe string combination as claimed in claim 4, is characterized in that:
Second completion pipe string combination comprises centralizer, and centralizer is enclosed within outside blind pipe or control water pipe nipple;
Length≤the 4m of control water pipe nipple sand control part;
Length≤the 5m of control water pipe nipple.
CN201420479365.2U 2014-08-22 2014-08-22 A kind of water and oil control second completion pipe string combination CN204266939U (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555569A (en) * 2015-09-24 2017-04-05 中国石油化工股份有限公司 Control water conservancy project tool
CN107218003A (en) * 2017-07-18 2017-09-29 中国石油集团渤海钻探工程有限公司 Coal bed gas continuous punching sandpipe string and its sand washing method
CN109138938A (en) * 2017-06-28 2019-01-04 中国石油化工股份有限公司 Adjust flow control water installations, pipe nipple, tubing string and two secondary control water completion methods
CN109281620A (en) * 2018-11-10 2019-01-29 东营宝业石油技术开发有限责任公司 A kind of horizontal well machinery intelligent water-controlled tubing string and its water control method
CN110017127A (en) * 2018-01-08 2019-07-16 中国石油化工股份有限公司 The water integrated device of acid fracturing control, acid fracturing water control pipe column and acid fracturing water control method
CN110130857A (en) * 2019-03-18 2019-08-16 中国石油集团长城钻探工程有限公司 A kind of open-hole horizontal well tune flow control water installations and balanced oil extraction process tubular column

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106555569A (en) * 2015-09-24 2017-04-05 中国石油化工股份有限公司 Control water conservancy project tool
CN109138938A (en) * 2017-06-28 2019-01-04 中国石油化工股份有限公司 Adjust flow control water installations, pipe nipple, tubing string and two secondary control water completion methods
CN109138938B (en) * 2017-06-28 2020-11-10 中国石油化工股份有限公司 Flow regulating and water controlling device, short joint, tubular column and secondary water controlling well completion method
CN107218003A (en) * 2017-07-18 2017-09-29 中国石油集团渤海钻探工程有限公司 Coal bed gas continuous punching sandpipe string and its sand washing method
CN110017127A (en) * 2018-01-08 2019-07-16 中国石油化工股份有限公司 The water integrated device of acid fracturing control, acid fracturing water control pipe column and acid fracturing water control method
CN109281620A (en) * 2018-11-10 2019-01-29 东营宝业石油技术开发有限责任公司 A kind of horizontal well machinery intelligent water-controlled tubing string and its water control method
CN110130857A (en) * 2019-03-18 2019-08-16 中国石油集团长城钻探工程有限公司 A kind of open-hole horizontal well tune flow control water installations and balanced oil extraction process tubular column

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