CN110145285B - A kind of anchoring type water injection technological string and its application method - Google Patents
A kind of anchoring type water injection technological string and its application method Download PDFInfo
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- CN110145285B CN110145285B CN201910633163.6A CN201910633163A CN110145285B CN 110145285 B CN110145285 B CN 110145285B CN 201910633163 A CN201910633163 A CN 201910633163A CN 110145285 B CN110145285 B CN 110145285B
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- downhole flow
- pipe
- flow regulator
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- 238000002347 injection Methods 0.000 title claims abstract description 92
- 239000007924 injection Substances 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000004873 anchoring Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000002787 reinforcement Effects 0.000 claims description 52
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 238000012423 maintenance Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 16
- 238000010168 coupling process Methods 0.000 claims description 16
- 238000005859 coupling reaction Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 235000020681 well water Nutrition 0.000 claims description 3
- 239000002349 well water Substances 0.000 claims description 3
- 230000008439 repair process Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of anchoring type water injection technological string and its application methods, wherein anchoring type water injection technological string, including casing, oil pipe is provided in described sleeve pipe, it is connected on the oil pipe with lower component, several packers, the packer are arranged at intervals on the oil pipe, and the oil pipe is divided into multiple water filling intervals；Several injection well downhole flow regulators are respectively arranged on the corresponding oil pipe of each water filling interval；Anchoring device is set between a pair of adjacent packer and the injection well downhole flow regulator；Step-up system is set on the oil pipe of the lower end of the anchoring device.The present invention is provided with step-up system, packer can be overcome with increased tube load of the frictional resistance of casing and anchor tool, to have increased pipe power when playing pipe, it realizes the effect that pipe can be completed using current repair equipment, operating cost and Zhan Jing period can be effectively reduced.
Description
Technical field
The invention belongs to oil-field water injection device fields, and in particular to a kind of anchoring type water injection technological string and its user
Method.
Background technique
At present in multistage subdivision injection well, tubing string is more using packer series, for amplificate packer, rises every when pipe
Grade packer has frictional resistance with casing；For compression packer, every grade of packer has deblocking power, when playing pipe in this way
The sum of packer frictional force at different levels or deblocking power need to be overcome, the problem of above mentioning chance card is easy to happen when using light maintenance operation.
In high pressure and deep well, oil field generallys use anchoring type separate layer water injection string at present, realizes that the anchoring of tubing string underground is anticreep,
Packer sealing reliability is improved, since long-term injecting water influences, the tool on tubing string with casing-contact is such as anchored class tool, envelope
Every device, centralizer etc., fouling can be generated to increase tube load, in addition the deeper tubing string self weight of well is bigger, therefore current repair equipment
The effective raising power of well head is much smaller compared with conventional shallow well, is also easy to meet card when playing pipe.When current repair equipment can not unfreezing then need
It is carried out large repairs operation using overhaul facilities, increases operating cost and Zhan Jing period.
Summary of the invention
The technical problems to be solved by the present invention are: a kind of anchoring type water injection technological string and its application method are provided, with
Packer has frictional resistance, and the anchor tool class in high pressure and deep well with casing in multistage subdivision injection well at present for solution
Fouling plays pipe chance card technique problem caused by having increased tube load, has increased pipe power to realize, has utilized current repair equipment
Pipe has been completed, the technical effect of operating cost and Zhan Jing period is reduced.
The specific technical solution of the present invention is as follows:
A kind of anchoring type water injection technological string, including casing are provided with oil pipe in described sleeve pipe, are connected on the oil pipe
With lower component:
Several packers, the packer are arranged at intervals on the oil pipe, and the oil pipe is divided into multiple water filling intervals；
Several injection well downhole flow regulators are respectively arranged on the corresponding oil pipe of each water filling interval；
Anchoring device is set between a pair of adjacent packer and the injection well downhole flow regulator；
Step-up system is set on the oil pipe of the lower end of the anchoring device.
Further, the step-up system includes top connection, is connected with the oil pipe of step-up system upper end；
Lower contact is connected with the oil pipe of step-up system lower end；
Central tube is set between the top connection and the lower contact, the upper end excircle of the central tube and institute
Top connection is stated to be fixedly connected；The lower end of the central tube extends to the inside of the lower contact；On the central tube excircle
It is provided with boss；
Reinforcement piston is set between the top connection and the lower contact, the lower end of the reinforcement piston and it is described under
Connector is fixedly connected, and the lateral surface of the medial surface and the central tube of the upper end of the reinforcement piston is slidably matched, the reinforcement
Piston forms closed cavity A in the upside of the boss with the central tube, forms closed cavity B in the downside of boss；
Sliding sleeve is set to the inside of the central tube, is slidably matched with the central tube；
Steel ball, the diameter of the steel ball is less than the internal diameter of the central tube, greater than the internal diameter of the sliding sleeve；
Pressure transmission hole is set on the side wall that the central tube is in contact with the cavity A.
It further, further include shear pin, one end is fixedly installed in the boss, and the other end is fixed in the sliding sleeve.
Further, sealing ring, the central tube and the reinforcement are provided on the face that the sliding sleeve is matched with central tube
Sealing ring is also equipped on the face that piston is in contact.
Further, gas vent is provided on the tube wall that the reinforcement piston is in contact with the cavity B.
Further, compensator, the compensator and the injection well downhole flow regulator phase being set at the top of water pipe are also connected on the oil pipe
Connection, the compensator are connected to the top of the injection well downhole flow regulator.
Further, be also connected with supporting slip on the oil pipe, the supporting slip be connected to the packer with it is described
Between injection well downhole flow regulator, the supporting slip is located at different water filling intervals from the anchoring device.
A kind of application method of anchoring type water injection technological string, comprising the following steps:
S01, it goes into the well, is sequentially connected check valve, third injection well downhole flow regulator, supporting slip, second level packer, the second injection well downhole flow regulator, one
Grade packer, step-up system, anchoring device, the first injection well downhole flow regulator and compensator, then well head is connected to oil pipe, in tripping in casing；
S02, water filling, anchoring device are anchored on casing with supporting slip in the case where oil pipe carrys out effect of water pressure, by oil pipe branch
Support anchoring, oil pipe water a part inject upper layer by the first injection well downhole flow regulator, and another part injects lower layer by third injection well downhole flow regulator；
S03, test, tripping in flowmeter measure full well water injection rate and upper layer water injection rate, find out lower layer's water injection rate by calculating；
S04, allotment, tripping in measurement and adjustment instrument device adjust the water nozzle aperture in the first injection well downhole flow regulator or third injection well downhole flow regulator, control water distribution
Device flow；
S05, pipe is played, from the light maintenance operation later period when pipe operation chance card, steel ball is put into from oil pipe, drop down onto reinforcement dress to steel ball
In setting, start to carry out reinforcement promotion operation；Light maintenance operating equipment, which promotes tubing string and reaches maximum, effectively promotes power, protects
While holding that light maintenance operating equipment is maximum effectively to promote power, in well head by pump truck application hydraulic coupling, anchoring device is anchored on
On casing, the tubing string of such step-up system or more will not be moved, at this time step-up system generated under action of hydraulic force to
On promotion power, oil pipe and anchor tool under step-up system move up, and completes an impulse stroke；Work as increasing
After power device completes an impulse stroke, termination of pumping pressure release, light maintenance operating equipment continues to promote tubing string, and step-up system restores
It to pre-operation state, need not be suppressed if tubing string can carry, entire tubing string is risen, if can not carry, repeats above-mentioned increasing
Power promotes operation, and step-up system is made to complete one or more impulse strokes again, up to light maintenance operating equipment can individually will be entire
Tubing string rises.
Further, the step-up system impulse stroke specifically includes the following steps: the step-up system original state
When, the sliding sleeve is fixed in the central tube by shear pin, and the pressure transmission hole on the central tube is stopped by the sliding sleeve, not with institute
The central passage for stating central tube communicates, and the volume of the cavity A is in minimum state；When card is met in operation needs reinforcement, from oil
The steel ball put into pipe drops down on sliding sleeve, applies hydraulic coupling, under the action of hydraulic coupling, steel ball and sliding sleeve by pump truck in well head
Shear pin is moved down and cuts, the last sliding sleeve is moved to the lower end of the central tube, at this time pressure transmission hole and central tube
Central passage be connected, step-up system is in pre-operation state at this time；During pump truck applies hydraulic coupling, hydraulic coupling is passed through
Pressure transmission hole enters in the cavity A, and reinforcement piston is pushed to move up, since the lower end of reinforcement piston is fixedly connected with lower contact, therefore
Lower contact and the oil pipe or anchor tool that are connected with lower contact is driven to move up while reinforcement piston moves up, the cavity A
Volume constantly increase, the cavity B is communicated by the gas vent on tube wall with outside, and the volume of the cavity B is gradually reduced,
When reinforcement piston is moved to the lower end in contact with top connection, an impulse stroke of the step-up system terminates, step-up system
The state after work.
The embodiment of the present invention at least has the advantages that
1. the embodiment of the present invention includes " water injection technological string includes casing, and oil pipe is provided in described sleeve pipe, described
Practical water filling well construction demand is provided with multiple packers on oil pipe, oil pipe is divided into multiple water filling intervals, each water filling
Injection well downhole flow regulator is provided on the corresponding oil pipe of interval；It is arranged between the one pair of them adjacent packer and the injection well downhole flow regulator
There is anchoring device；The lower end of the anchoring device is also connected with step-up system " etc. technical solutions, pass through setting step-up system, solution
Packer of having determined plays the skill that pipe meets card caused by thering is frictional resistance or anchor tool class fouling to increase tube load with casing
Art problem, reach light maintenance operating equipment individually can rise by entire tubing string, to reduce the technology of operating cost and Zhan Jing period
Effect.
2. the embodiment of the present invention includes " step-up system includes the upper lower contact being connected with oil pipe, upper lower contact it
Between be connected with central tube, central tube upper end is fixedly connected with the top connection；The lower end of the central tube, which extends to down, to be connect
The inside of head；It is provided with boss on the central tube excircle, reinforcement piston, the increasing are slidably connected on the outside of central tube
The lower end of power piston is fixedly connected with lower contact, and the medial surface of the upper end of the reinforcement piston and the lateral surface of the central tube are sliding
Dynamic cooperation, the inside of the central tube is also sliding combined with sliding sleeve；The upper end of the side wall boss of central tube is additionally provided with pressure transmission hole,
With the reinforcement piston and the central, tubular at cavity communicate, and the steel ball applied when playing pipe, the steel ball it is straight
Diameter be less than the central tube internal diameter, greater than the internal diameter of the sliding sleeve " etc. technical solutions, rise pipe when, pass through hydraulic power drive
Steel ball squeezes sliding sleeve and moves down so that pressure transmission hole and the reinforcement piston and the central, tubular at cavity communicate, in turn
Hydraulic power drive reinforcement piston moves up, and drives the oil pipe that connects of lower contact or less or moves tool up, step-up system can be according to reality
Border situation carries out multiple reinforcement process, to increase pipe power, reaches light maintenance operating equipment for oil pipe and acts the technical effect of going out.
3. the embodiment of the present invention includes " be also connected with compensator on the oil pipe, the compensator and be set to water pipe top
The injection well downhole flow regulator in portion is connected, and the compensator is connected to the top of the injection well downhole flow regulator " and " support is also connected on the oil pipe
Slips, the supporting slip are connected between the packer and the injection well downhole flow regulator, the supporting slip and the anchoring device
Positioned at different water filling intervals " etc. technical solutions, can by the cooperation of compensator and supporting slip, solve oil pipe extension deformation asks
Topic, reaches the anchoring compensation technique effect of oil pipe.
Detailed description of the invention
Fig. 1 is the overall structure diagram of anchoring type water injection technological string；
Fig. 2 is the original state schematic diagram of step-up system；
Fig. 3 is enlarged drawing at the C in Fig. 2；
Fig. 4 is the pre-operation status diagram of step-up system；
Fig. 5 is enlarged drawing at the D in Fig. 4；
Fig. 6 is status diagram after the work of step-up system；
Fig. 7 is enlarged drawing at the E in Fig. 6；
In figure: 10- oil pipe, 20- casing, 30- compensator, the first injection well downhole flow regulator of 41-, the second injection well downhole flow regulator of 42-, 43- third are matched
Hydrophone, 50- anchoring device, 60- step-up system, 61- top connection, 62- steel ball, 63- sliding sleeve, 64- reinforcement piston, 641- exhaust
Hole, 65- pressure transmission hole, 66- shear pin, 67- central tube, 671- boss, 68- lower contact；71- level-one packer, the packing of 72- second level
Device, 80- supporting slip, 90- check valve.
Specific embodiment
The embodiment of the invention provides anchoring type water injection technological string and its application method, the water injection technological string includes
Casing, is provided with oil pipe in described sleeve pipe, and practical water filling well construction demand is provided with multiple packers on the oil pipe, will
Oil pipe is divided into multiple water filling intervals, is provided with injection well downhole flow regulator on the corresponding oil pipe of each water filling interval；One pair of them are adjacent
Anchoring device is provided between the packer and the injection well downhole flow regulator；The lower end of the anchoring device is also connected with step-up system.
The step-up system includes the upper lower contact being connected with oil pipe, and central tube, central tube upper end are connected between upper lower contact
It is fixedly connected with the top connection；The lower end of the central tube extends to the inside of lower contact；On the central tube excircle
It is provided with boss, reinforcement piston, the lower end of the reinforcement piston and the fixed company of lower contact are slidably connected on the outside of central tube
It connects, the lateral surface of the medial surface and the central tube of the upper end of the reinforcement piston is slidably matched, and the inside of the central tube is also
It is sliding combined with sliding sleeve；The upper end of the side wall boss of central tube is additionally provided with pressure transmission hole, with the reinforcement piston and the center
The cavity that pipe is formed communicates, and the steel ball applied when playing pipe, and the diameter of the steel ball is less than the internal diameter of the central tube, greatly
In the internal diameter of the sliding sleeve.By the setting of step-up system, when playing pipe, sliding sleeve is squeezed to moving down by hydraulic power drive steel ball
It is dynamic so that pressure transmission hole and the reinforcement piston and the central, tubular at cavity communicate, and then hydraulic power drive reinforcement piston
It moves up, drive the oil pipe that connects of lower contact or less or moves tool up, step-up system can carry out multiple reinforcement according to actual conditions
Process, to increase pipe power, until entire tubing string individually can be risen by light maintenance operating equipment, thus reduce operating cost and
Account for the technical effect in well period.
Technical solution of the present invention is described in detail with reference to the accompanying drawings and embodiments:
The invention discloses a kind of anchoring type water injection technological strings, as shown in Figure 1, including casing 20, in described sleeve pipe 20
It is provided with oil pipe 10, practical water filling well construction demand is provided with multiple packers on the oil pipe 10, oil pipe 10 is divided be
Multiple water filling intervals, tubing string of the present invention can be designed as two sections and the above seperated layer water injection, and the embodiment of the present application is only filled the water with three
It is illustrated for interval.It is specific as follows:
The packer includes level-one packer 71 and second level packer 72, the level-one packer 71 and second level
Packer 72 is respectively arranged between adjacent oil reservoir, water injection well is divided into three water filling intervals, the packer has realized pipe
When upper lifting pipe post gradually deblocking, avoided multiple packers when pipe while having unsealed, tube load has been effectively reduced.As shown in Figure 1, institute
It states and is respectively arranged with injection well downhole flow regulator on three water filling intervals, the top of the level-one packer 71 is provided with the first injection well downhole flow regulator 41, institute
The first injection well downhole flow regulator 41 is stated corresponding to the first water filling interval；It is provided between the level-one packer 71 and second level packer 72
Second injection well downhole flow regulator 42, second injection well downhole flow regulator 42 correspond to the second water filling interval；The lower section of the second level packer 72 is provided with
Third injection well downhole flow regulator 43, the third injection well downhole flow regulator 43 correspond to third and fill the water interval.The injection well downhole flow regulator can realize that single layer measures, and be not necessarily to
Diminishing method test.
Further include anchoring device 50, be set to the lower section of first injection well downhole flow regulator 41, the anchoring device 50 realizes work
Shi Yongjiu is anchored on casing 20.Upper lifting pipe post releases anchoring when the anchoring device 50 has realized pipe.
Step-up system 60, the upper end of the step-up system 60 are connected with the anchoring device 50, the step-up system 60
Lower end be connected with the level-one packer 71.As shown in Figures 2 to 7, the step-up system 60 includes with lower component:
Top connection 61 is connected with the oil pipe 10 of 60 upper end of step-up system.
Lower contact 68 is connected with the oil pipe 10 of 60 lower end of step-up system.
Central tube 67 is set between the top connection 61 and the lower contact 68, outside the upper end of the central tube 67
Circumference is fixedly connected with the top connection 61；The lower end of the central tube 67 extends to the inside of the lower contact 68；It is described
Boss is provided on 67 excircle of central tube.
Reinforcement piston 64 is set between the top connection 61 and the lower contact 68, the lower end of the reinforcement piston 64
It is fixedly connected with the lower contact 68, the lateral surface of the medial surface of the upper end of the reinforcement piston 64 and the central tube 67 slides
Cooperate, sealing ring is provided between the face that the reinforcement piston 64 is in contact with the central tube 67, guarantees leakproofness；The increasing
Power piston 64 forms closed cavity A in the upside of the boss with the central tube 67, is formed in the downside of boss closed
Cavity B is provided with gas vent 641 on the tube wall that the reinforcement piston 64 is in contact with the cavity B.
Sliding sleeve 63 is set to the inside of the central tube 67, is slidably matched with the central tube 67；The sliding sleeve 63 is in
It is provided with sealing ring between the face that heart pipe 67 matches, guarantees leakproofness between the two.
Shear pin 66, one end are fixedly installed in the boss, and the other end is fixed in the sliding sleeve 63.
Steel ball 62, the diameter of the steel ball 62 is less than the internal diameter of the central tube 67, greater than the internal diameter of the sliding sleeve 63.
Pressure transmission hole 65 is set on the side wall that the central tube 67 is in contact with the cavity A.
The step-up system 60 is set between level-one packer 71 and anchoring device 50, Guan Zuoye from the light maintenance operation later period
When meeting card, steel ball 62 is put into from oil pipe 10, applies hydraulic coupling in well head, and additional elevation is increased in underground by step-up system 60
Power, maximum lift power are that the increased maximum lift power in underground and current repair equipment well head maximum effectively promote the sum of power,
To which the unfreezing success rate of anchoring type separate layer water injection string light maintenance operation greatly improved, operating cost and Zhan Jingzhou are reduced
Phase.
The specific workflow of the step-up system 60 is as follows:
The original state of the step-up system 60 is as shown in Figures 2 and 3, and the sliding sleeve 63 is fixed in described by shear pin 66
In heart pipe 67, the pressure transmission hole 65 on the central tube 67 is stopped by the sliding sleeve 63, not with the central passage of the central tube 67
It communicates, the volume of the cavity A is in minimum state.When card is met in operation needs reinforcement, the steel ball 62 that is put into from oil pipe 10
It drops down on sliding sleeve 63, hydraulic coupling is applied by pump truck in well head, under the action of hydraulic coupling, steel ball 62 and sliding sleeve 63 occur downwards
Shear pin 66 is moved and cuts, the last sliding sleeve 63 is moved to the lower end of the central tube 67, at this time pressure transmission hole 65 and central tube
67 central passage is connected, and step-up system 60 is in pre-operation state at this time, as shown in Figures 4 and 5.Pump truck applies hydraulic coupling
During, hydraulic coupling enters in the cavity A by pressure transmission hole 65, pushes reinforcement piston 64 to move up, due to reinforcement piston 64
Lower end be fixedly connected with lower contact 68, therefore drive and lower contact 68 and be connected while reinforcement piston 64 moves up with lower contact 68
The oil pipe 10 or anchor tool connect moves up, and the volume of the cavity A constantly increases, and the cavity B passes through the gas vent on tube wall
641 communicate with outside, and the volume of the cavity B is gradually reduced, when reinforcement piston 64 is moved to the lower end in contact with top connection 61
When, an impulse stroke of the step-up system 60 terminates, and step-up system 60 is in state after work, as shown in FIG. 6 and 7.
The present embodiment further includes compensator 30, and the compensator 30 is connected to the top of first injection well downhole flow regulator 41, described
Compensator 30 can realize the flexible compensation of 30 or more oil pipe 10 of compensator.The anchoring device 50 can prevent the compensator 30 with
Lower tubular column is wriggled upwards.
Supporting slip 80, the upper end of the supporting slip 80 are connected with the second level packer 72, the supporting slip
80 lower end is connected with the third injection well downhole flow regulator 43.Permanent support is on casing 20 when the supporting slip 80 realizes work,
Prevent the anchoring device from wriggling downwards with lower tubular column.Upper lifting pipe post releases support when the supporting slip 80 has realized pipe.Institute
It states the components contacted when anchoring device and the work of supporting slip 80 with casing 20 and is all made of antiscale material or scale control treatments.
Check valve 90 is connected to the lower end of the third injection well downhole flow regulator 43.
It is oil pipe 10 used in this application, compensator 30, supporting slip 80, injection well downhole flow regulator, packer, anchoring device 50, unidirectional
Valve 90 is existing product, directly buys installation, discusses its structure without being unfolded.
The invention also discloses the application methods of above-mentioned anchoring type water injection technological string, specifically includes the following steps:
S01, go into the well, be sequentially connected check valve, third injection well downhole flow regulator, supporting slip 80, second level packer, the second injection well downhole flow regulator,
Level-one packer, step-up system 60, anchoring device, the first injection well downhole flow regulator 41 and compensator 30, then it is connected to well head with oil pipe 10, under
Enter in casing 20.
S02, water filling, anchoring device are anchored on casing 20 with supporting slip 80 in the case where oil pipe 10 carrys out effect of water pressure, will
The support anchoring of oil pipe 10,10 water a part of oil pipe inject upper layer by the first injection well downhole flow regulator 41, and another part passes through third water distribution
Device injects lower layer.
S03, test, tripping in flowmeter measure full well water injection rate and upper layer water injection rate, find out lower layer's water injection rate by calculating.
S04, allotment, tripping in measurement and adjustment instrument device adjust the water nozzle aperture in the first injection well downhole flow regulator 41 or third injection well downhole flow regulator, and control is matched
Hydrophone flow.
S05, pipe is played, when card is met in pipe operation from the light maintenance operation later period, steel ball 62 is put into from oil pipe 10, is dropped down onto steel ball 62
In step-up system 60, start to carry out reinforcement promotion operation.Light maintenance operating equipment promotes tubing string and reaches maximum and effectively mentioned
Power is risen, while keeping light maintenance operating equipment is maximum effectively to promote power, hydraulic coupling, anchoring dress are applied by pump truck in well head
It sets and is anchored on casing 20, the tubing string of such 60 or more step-up system will not move, and step-up system 60 is hydraulic at this time
Power effect is lower to generate upward promotion power, and the oil pipe 10 and anchor tool under step-up system 60 move up, complete
At an impulse stroke.After step-up system 60 completes an impulse stroke, termination of pumping pressure release, light maintenance operating equipment continues to tubing string
It being promoted, step-up system 60 restores to pre-operation state, need not suppress if tubing string can carry, entire tubing string is risen, if
It can not carry, then repeat above-mentioned reinforcement and promote operation, step-up system 60 is made to complete one or more impulse strokes again, until
Entire tubing string individually can be risen by light maintenance operating equipment.
The words such as the front, back, left, right, up, down in the present invention are only the convenience of description scheme, are not formed to technical side
The restriction of case.Although preferred embodiments of the present invention have been described, once a person skilled in the art knows basic wounds
The property made concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as includes
Preferred embodiment and all change and modification for falling into the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of anchoring type water injection technological string, including casing, oil pipe is provided in described sleeve pipe, it is characterised in that: the oil
Be connected on pipe with lower component: several packers, the packer are arranged at intervals on the oil pipe, the oil pipe are divided into more
A water filling interval；Several injection well downhole flow regulators are respectively arranged on the corresponding oil pipe of each water filling interval；Anchoring device is set to most
Between the packer on upper layer and the injection well downhole flow regulator of top layer；Step-up system is set on the oil pipe of the lower end of the anchoring device；Branch
Slips is supportted, the supporting slip is connected between the packer of the bottom and the injection well downhole flow regulator of the bottom, the supporting slip setting
On oil pipe below the step-up system；
The step-up system includes,
Top connection is connected with the oil pipe of the step-up system upper end；
Lower contact is connected with the oil pipe of the step-up system lower end；
Central tube is set between the top connection and the lower contact, the upper end excircle of the central tube and it is described on
Connector is fixedly connected；The lower end of the central tube extends to the inside of the lower contact；It is arranged on the central tube excircle
There is boss；
Reinforcement piston is set between the top connection and the lower contact, the lower end of the reinforcement piston and the lower contact
It is fixedly connected, the lateral surface of the medial surface and the central tube of the upper end of the reinforcement piston is slidably matched, the reinforcement piston
Closed cavity A is formed in the upside of the boss with the central tube, forms closed cavity B in the downside of boss；
Sliding sleeve is set to the inside of the central tube, is slidably matched with the central tube；
Steel ball, the diameter of the steel ball is less than the internal diameter of the central tube, greater than the internal diameter of the sliding sleeve；
Pressure transmission hole is set on the side wall that the central tube is in contact with the cavity A.
2. anchoring type water injection technological string as described in claim 1, it is characterised in that: further include shear pin, one end fixation is set
It is placed in the boss, the other end is fixed in the sliding sleeve.
3. anchoring type water injection technological string as claimed in claim 1 or 2, which is characterized in that the sliding sleeve and central tube match
It is provided with sealing ring on the face of conjunction, is also equipped with sealing ring on the face that the central tube is in contact with the reinforcement piston.
4. anchoring type water injection technological string as claimed in claim 3, it is characterised in that: the reinforcement piston and the cavity B
Gas vent is provided on the tube wall being in contact.
5. anchoring type water injection technological string as described in claim 1, it is characterised in that: be also connected with compensation on the oil pipe
Device, the compensator are connected with the injection well downhole flow regulator being set at the top of the oil pipe, and the compensator is connected to the injection well downhole flow regulator
Top.
6. a kind of application method based on anchoring type water injection technological string as claimed in claim 2, which is characterized in that including following
Step:
S01, it goes into the well, is sequentially connected check valve, third injection well downhole flow regulator, supporting slip, second level packer, the second injection well downhole flow regulator, level-one envelope
Well head is connected to every device, step-up system, anchoring device and the first injection well downhole flow regulator, then with oil pipe, in tripping in casing；
S02, water filling, anchoring device and supporting slip are anchored on casing in the case where oil pipe carrys out effect of water pressure, and oil pipe is supported
Anchoring, oil pipe water a part inject upper layer by the first injection well downhole flow regulator, and another part injects lower layer by third injection well downhole flow regulator；
S03, test, tripping in flowmeter measure full well water injection rate and upper layer water injection rate, find out lower layer's water injection rate by calculating；
S04, allotment, tripping in measurement and adjustment instrument device adjust the water nozzle aperture in the first injection well downhole flow regulator or third injection well downhole flow regulator, control injection well downhole flow regulator stream
Amount；
S05, pipe is played, from the light maintenance operation later period when pipe operation chance card, steel ball is put into from oil pipe, drops down onto step-up system to steel ball
It is interior, start to carry out reinforcement promotion operation；Light maintenance operating equipment, which promotes tubing string and reaches maximum, effectively promotes power, keeps
While light maintenance operating equipment maximum effectively promotes power, hydraulic coupling is applied by pump truck in well head, anchoring device is anchored on set
The tubing string of Guan Shang, such step-up system or more will not move, and step-up system generates upwards under action of hydraulic force at this time
Promotion power, oil pipe and supporting slip under step-up system move up, and completes an impulse stroke；Work as reinforcement
Device complete an impulse stroke after, termination of pumping pressure release, light maintenance operating equipment continues to promote tubing string, step-up system restore to
Pre-operation state need not be suppressed if tubing string can carry, and entire tubing string is risen, if can not carry, repeats above-mentioned reinforcement
Operation is promoted, step-up system is made to complete one or more impulse strokes again, until light maintenance operating equipment can individually will be managed entirely
Column rises.
7. the application method of anchoring type water injection technological string as claimed in claim 6, which is characterized in that the step-up system
Specifically includes the following steps: when the original state of the step-up system, the sliding sleeve is fixed in described impulse stroke by shear pin
In heart pipe, the pressure transmission hole on the central tube is stopped by the sliding sleeve, does not communicate with the central passage of the central tube, the chamber
The volume of body A is in minimum state；When card is met in operation needs reinforcement, dropped down on sliding sleeve from the steel ball put into oil pipe, in well
Mouth applies hydraulic coupling by pump truck, and under the action of hydraulic coupling, steel ball and sliding sleeve move down and cut shear pin, last institute
The lower end that sliding sleeve is moved to the central tube is stated, pressure transmission hole is connected with the central passage of central tube at this time, at this time step-up system
In pre-operation state；During pump truck applies hydraulic coupling, hydraulic coupling enters in the cavity A by pressure transmission hole, pushes and increases
Power piston moves up, and since the lower end of reinforcement piston is fixedly connected with lower contact, therefore connects under driving while reinforcement piston moves up
Head and the oil pipe and supporting slip being connected with lower contact move up, and the volume of the cavity A constantly increases, and the cavity B passes through
Gas vent on tube wall is communicated with outside, and the volume of the cavity B is gradually reduced, when reinforcement piston be moved to under top connection
When end in contact, an impulse stroke of the step-up system terminates, and step-up system is in state after work.
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| CN2580096Y (en) * | 2002-09-27 | 2003-10-15 | 辽河石油勘探局工程技术研究院 | Underwell hydraulic pulling releasing device |
| CN103244067A (en) * | 2013-05-15 | 2013-08-14 | 西南石油大学 | Downhole compound lifting tool for separated layer water injection pipe columns for highly deviated well and using method thereof |
| CN106150416A (en) * | 2015-03-27 | 2016-11-23 | 中国石油化工股份有限公司 | High angle water injection well capillary tube hydraulic booster throw in catcher |
| CN109681162A (en) * | 2018-04-19 | 2019-04-26 | 中国石油化工股份有限公司 | Anchoring compensation layered water injection method and equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2442233C (en) * | 2001-03-29 | 2010-07-13 | Tesco Corporation | Downhole axial force generating tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133412A (en) * | 1991-06-14 | 1992-07-28 | Baker Hughes Incorporated | Pull release device with hydraulic lock for electric line setting tool |
| CN2580096Y (en) * | 2002-09-27 | 2003-10-15 | 辽河石油勘探局工程技术研究院 | Underwell hydraulic pulling releasing device |
| CN103244067A (en) * | 2013-05-15 | 2013-08-14 | 西南石油大学 | Downhole compound lifting tool for separated layer water injection pipe columns for highly deviated well and using method thereof |
| CN106150416A (en) * | 2015-03-27 | 2016-11-23 | 中国石油化工股份有限公司 | High angle water injection well capillary tube hydraulic booster throw in catcher |
| CN109681162A (en) * | 2018-04-19 | 2019-04-26 | 中国石油化工股份有限公司 | Anchoring compensation layered water injection method and equipment |
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| CN110145285A (en) | 2019-08-20 |
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Effective date of registration: 20200331 Address after: 257000 Ji'nan Road, Dongying District, Shandong, No. 125, No. Co-patentee after: RESEARCH INSTITUTE OF PETROLEUM ENGINEERING, SINOPEC SHENGLI OILFIELD BRANCH Patentee after: China Petroleum & Chemical Corp. Address before: 257000 No. 306, three West Road, Dongying District, Shandong, Dongying Patentee before: RESEARCH INSTITUTE OF PETROLEUM ENGINEERING, SINOPEC SHENGLI OILFIELD BRANCH |