CN203214025U - Layered oil extraction pipe string - Google Patents

Layered oil extraction pipe string Download PDF

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Publication number
CN203214025U
CN203214025U CN 201320223734 CN201320223734U CN203214025U CN 203214025 U CN203214025 U CN 203214025U CN 201320223734 CN201320223734 CN 201320223734 CN 201320223734 U CN201320223734 U CN 201320223734U CN 203214025 U CN203214025 U CN 203214025U
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CN
China
Prior art keywords
sliding sleeve
water plugging
pipe string
fixing depth
string
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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.)
Expired - Fee Related
Application number
CN 201320223734
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Chinese (zh)
Inventor
李惠芳
董永亮
曾翔
李营波
牛琳
聂涛
张燕
张晓强
徐凯
刘向阳
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聂涛
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Priority to CN 201320223734 priority Critical patent/CN203214025U/en
Application granted granted Critical
Publication of CN203214025U publication Critical patent/CN203214025U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a layered oil extraction pipe string, which comprises an upper pumping pipe string and a lower water plugging pipe string which are connected with each other; the pumping pipe string comprises an oil well pump and a guide cone which are connected with each other; the water plugging pipe string comprises a release joint; the upper part of the release joint is in a conical shape, and the lower part of the release joint is in a cylindrical shape; the conical shape is connected with the cylindrical shape; the upper part of the outer surface of the cylinder is provided with a supporting device; the middle part of the outer surface of the cylinder is provided with a water plugging packer, a depth setting device and a sliding sleeve switch; the depth setting device is matched with the sliding sleeve switch; the water plugging packer is used for dividing the water plugging pipe string into sections; the water plugging packer, the depth setting device and the sliding sleeve switch are distributed at intervals; the lower part of the inner surface of the cylinder is provided with a sealing ball seat, the bottom is provided with a sieve tube plug, and the cylinder is internally provided with an electric switch controller which is connected with a test cable; the bottom of an oil well is provided with an artificial well bottom. Any water plugging layer section of a rod-pumped well can be adjusted under normal pumping conditions; the layered oil extraction pipe string particularly meets the requirements of mechanical layered oil extraction in middle and deep wells.

Description

Separate-layer production string
Technical field
The utility model relates to the oil exploration equipment technical field, relates in particular to a kind of separate-layer production string.
Background technology
There are some defectives in separate zone water shutoff flow string and the supporting downhole tool of prior art Oilfield using.For example some oil field is in separate zone water shutoff recovers the oil, and water plugging string and flow string are that one-trip string is lowered to, and just must pre-determine the water blockoff interval, its packer sets by applying tubing string gravity, therefore bearing capacity is low, the flexible distortion of tubing string, and can not give up and change layer production with fixed tubular column.Simultaneously, during pump detection and workover, water plugging string also will trip out together, and task difficulty is big, takes out in the process at pump, and the tubing string pressurized can aggravate to manage, the wearing and tearing of bar, pump, has influenced production cycle and oil well pump efficient.In addition, the tubing string in the separate zone water shutoff tubing string can be given up, but the bracing or strutting arrangement support force is low, packer heat resisting and pressure resisting poor performance, and tubing string easily produces wriggling.Used downhole on-off actuator carries out pulling and builds the pressure when changing layer production, complicated operation, and technical difficulty is big, and success rate is lower, is difficult to reach the construction purpose; Two adopt and to be lowered to the opening and closing that the motor switch controller is realized the water blockoff device from annular space, drive that sliding sleeve is descending could close it owing to must transfer the motor switch controller when closing sliding sleeve, and action is difficult the realization, usually closes not in place.
Summary of the invention
The utility model provides a kind of separate-layer production string in order to solve the prior art above shortcomings; Can realize production and the shutoff of corresponding interval, realize the adjustment of any water blockoff interval of rod-pumped well under normal pump stripping spare, can arbitrarily carry out water detection, water blockoff and change layer production by motionless flow string, the derailing switch switch is flexible, easy and simple to handle reliable, can satisfy the needs of present oil production by layer, it is stifled as to live, solve, transfer layer requirement of water pack off oil production by layer simply and easily to be particularly useful for middle-deep well.
The purpose of this utility model is to adopt following technical proposals to realize:
A kind of separate-layer production string, comprise that the top pump that is connected takes out tubing string, and bottom water plugging string, pump is taken out tubing string and is comprised the oil well pump that is connected, starting taper, described water plugging string comprises back-off sub, wherein back-off sub top is taper barrel, the bottom is cylinder barrel shaped, taper barrel is connected with cylinder barrel shaped, the cylindrical outer tube upper surface is provided with eyelid retractor, the middle part is provided with Packer for blocking water, fixing depth device, the sliding sleeve switch device, fixing depth device cooperates with the sliding sleeve switch device, Packer for blocking water is with the water plugging string segmentation, Packer for blocking water and fixing depth device, the sliding sleeve switch device is spaced apart, cylindrical drum inner surface bottom is provided with setting ball seat, the bottom is provided with the screen casing plug, is provided with the motor switch controller in the cylindrical drum, and the motor switch controller is connected with test cable, the sliding sleeve switch device adopts KHT sliding sleeve switch device, and the bottom of oil well is provided with the artificial bottom of a well.
Fixing depth device comprises fixing depth device main body, lining, connector, and the fixing depth device main body is connected with lining, and lining is connected with connector, and upper groove, further groove, low groove are arranged in the described fixing depth device, and three grooves are surveyed fixing depth device with collar locator and cooperated.
Lining is connected with fixing depth device main body, connector respectively by sealant tape or fluid sealant.
The beneficial effects of the utility model:
1. novel separate-layer production string and instrument can dispose arbitrarily according to hole condition and production requirement;
2. construction technology is simple and reliable, and it is reliable to be tightly connected, and is implemented in the switch adjustment of finishing any interval in down-hole under the condition of the fixed tubular column that do not stop production;
3. the sliding sleeve switch device can multistagely use, and once is lowered to the switch motion that the motor switch tester can be finished any one-level derailing switch in down-hole, and cooperates the calculating of finishing corresponding interval production fluid amount and moisture content with ground instrument;
The 4 organically combinations of adjustment with water detection, water blockoff and water blockoff interval improve the accuracy of water detection, reduce the water-blocking operation expense, and the superiority of performance water pack off is increased economic efficiency.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment;
Fig. 2 is the structural representation of the utility model fixing depth device;
Wherein, 1, oil well pump; 2, test cable; 3, starting taper; 4, back-off sub; 5, eyelid retractor; 6, Packer for blocking water; 7, fixing depth device, 8, the sliding sleeve switch device; 9, motor switch controller; 10, setting ball seat; 11, screen casing plug, 12, the artificial bottom of a well, 13, the fixing depth device main body; 14, lining; 15, connector, 16, upper groove, 17, further groove, 18, low groove.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further.
A kind of separate-layer production string, comprise that the top pump that is connected takes out tubing string, and bottom water plugging string, pump is taken out tubing string and is comprised the oil well pump 1 that is connected, starting taper 3, described water plugging string comprises back-off sub 4, wherein, back-off sub 4 tops are taper barrel, the bottom is cylinder barrel shaped, taper barrel is connected with cylinder barrel shaped, the cylindrical outer tube upper surface is provided with eyelid retractor 5, the middle part is provided with Packer for blocking water 6, fixing depth device 7, sliding sleeve switch device 8, fixing depth device 7 cooperates with sliding sleeve switch device 8, Packer for blocking water 6 is with the water plugging string segmentation, Packer for blocking water 6 and fixing depth device 7, sliding sleeve switch device 8 is spaced apart, cylindrical drum inner surface bottom is provided with setting ball seat 10, the bottom is provided with screen casing plug 11, be provided with motor switch controller 9 in the cylindrical drum, motor switch controller 9 is connected with test cable 2, sliding sleeve switch device 8 adopts KHT sliding sleeve switch device, and the bottom of oil well is provided with artificial bottom of a well 12.
Described fixing depth device 7 comprises fixing depth device main body 13, lining 14, connector 15, and fixing depth device main body 13 is connected 14 with lining, and lining 14 is connected with connector 15.Described lining 14 is connected with fixing depth device main body 13, connector 15 respectively by sealant tape or fluid sealant.Three inner groovies are arranged in the described fixing depth device, and namely upper groove 16, further groove 17, and 18, three grooves of low groove are surveyed fixing depth device with collar locator and are cooperated.Survey fixing depth device by three grooves and collar locator and cooperate the accurate depthkeeping of realization.During work, collar locator is descending detect three recesses of fixing depth device after, carry instrument again, collar locator signal when further groove 17, after namely opening depthkeeping point one appearance of sliding sleeve switch device, check cable reel immediately, this moment, the butt joint pawl of motor switch controller was parked between the upper surface of the spring detent of sliding sleeve of sliding sleeve switch device and lower limit body just, strut the butt joint pawl, on carry instrument, cable stretch progressively rises, when rising to a certain numerical value, descend suddenly, the test cable car spring unloads suddenly simultaneously, can judge that the sliding sleeve switch device is drawn back, and checks winch; Detect the nethermost recess signal appearance of fixing depth device when collar locator after, transfer instrument again to predetermined size, instrument butt joint pawl is in below the sliding sleeve switch device fully, check cable reel, energising struts the butt joint pawl of motor switch controller, on carry instrument, descend when cable stretch shows suddenly, can judge that the sliding sleeve switch device is closed, check cable reel this moment immediately.
The utility model is finished the opening and closing of sliding sleeve switch device 8 by the motor switch tester.Specifically principle and process are, go into the well according to working design pipe arrangement post, utilize Packer for blocking water that each interval card is opened, and have the sliding sleeve switch device at corresponding interval tubing string, and packer sets earlier when adding hydraulic pressure, drop into steel ball from oil pipe, and the realization tubing string that builds the pressure is given up.Be lowered to motor switch instrument part by cable, by on motor switch controller butt joint pawl and the sliding sleeve switch device or the lower spring pawl match, last portable cable is finished the action that opens or closes of sliding sleeve switch device, and then realizes production and the shutoff of corresponding interval.
This tubing string can be realized the adjustment of any water blockoff interval of rod-pumped well under normal pump stripping spare, can arbitrarily carry out water detection, water blockoff and change layer production by motionless flow string, and the derailing switch switch is flexible, and is easy and simple to handle reliable, can satisfy the needs of present oil production by layer.
Though above-mentionedly by reference to the accompanying drawings the specific embodiment of utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.

Claims (3)

1. separate-layer production string, comprise that the top pump that is connected takes out tubing string, and bottom water plugging string, it is characterized in that, described pump is taken out tubing string and is comprised the oil well pump that is connected, starting taper, described water plugging string comprises back-off sub, wherein back-off sub top is taper barrel, the bottom is cylinder barrel shaped, taper barrel is connected with cylinder barrel shaped, the cylindrical outer tube upper surface is provided with eyelid retractor, the middle part is provided with Packer for blocking water, fixing depth device, the sliding sleeve switch device, fixing depth device cooperates with the sliding sleeve switch device, Packer for blocking water is with the water plugging string segmentation, Packer for blocking water and fixing depth device, the sliding sleeve switch device is spaced apart, cylindrical drum inner surface bottom is provided with setting ball seat, the bottom is provided with the screen casing plug, be provided with the motor switch controller in the cylindrical drum, the motor switch controller is connected with test cable, and the sliding sleeve switch device adopts KHT sliding sleeve switch device, and the bottom of oil well is provided with the artificial bottom of a well.
2. separate-layer production string as claimed in claim 1, it is characterized in that, described fixing depth device comprises fixing depth device main body, lining, connector, the fixing depth device main body is connected with lining, lining is connected with connector, upper groove, further groove, low groove are arranged in the described fixing depth device, and described upper groove, further groove, low groove are surveyed fixing depth device with collar locator and are cooperated.
3. separate-layer production string as claimed in claim 1 is characterized in that, described lining is connected with fixing depth device main body, connector respectively by sealant tape or fluid sealant.
CN 201320223734 2013-04-27 2013-04-27 Layered oil extraction pipe string Expired - Fee Related CN203214025U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320223734 CN203214025U (en) 2013-04-27 2013-04-27 Layered oil extraction pipe string

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Application Number Priority Date Filing Date Title
CN 201320223734 CN203214025U (en) 2013-04-27 2013-04-27 Layered oil extraction pipe string

Publications (1)

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CN203214025U true CN203214025U (en) 2013-09-25

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105804708A (en) * 2014-12-29 2016-07-27 中国石油天然气股份有限公司 Oil well shaft hierarchical controlling device and control method thereof
CN107489398A (en) * 2017-09-05 2017-12-19 克拉玛依市鑫众石油工程技术服务有限公司 One kind is desirable can to bore bridging plug
CN107725013A (en) * 2017-09-19 2018-02-23 中国石油天然气股份有限公司 A kind of method that zonal testing and oil production by layer connection is made
RU2713290C1 (en) * 2019-03-22 2020-02-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" Well pumping unit for simultaneous separate operation of two formations

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105804708A (en) * 2014-12-29 2016-07-27 中国石油天然气股份有限公司 Oil well shaft hierarchical controlling device and control method thereof
CN107489398A (en) * 2017-09-05 2017-12-19 克拉玛依市鑫众石油工程技术服务有限公司 One kind is desirable can to bore bridging plug
CN107725013A (en) * 2017-09-19 2018-02-23 中国石油天然气股份有限公司 A kind of method that zonal testing and oil production by layer connection is made
CN107725013B (en) * 2017-09-19 2020-05-08 中国石油天然气股份有限公司 Layered test and layered oil production combined operation method
RU2713290C1 (en) * 2019-03-22 2020-02-04 Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" Well pumping unit for simultaneous separate operation of two formations

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130925

Termination date: 20140427