CN105986799A - Ball seat packing multi-cluster perforation fracturing pipe string and construction method - Google Patents
Ball seat packing multi-cluster perforation fracturing pipe string and construction method Download PDFInfo
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- CN105986799A CN105986799A CN201510090783.1A CN201510090783A CN105986799A CN 105986799 A CN105986799 A CN 105986799A CN 201510090783 A CN201510090783 A CN 201510090783A CN 105986799 A CN105986799 A CN 105986799A
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Abstract
The invention provides a ball seat packing multi-cluster perforation fracturing pipe string and a construction method. The ball seat packing multi-cluster perforation fracturing pipe string comprises a completion casing, a perforation pipe string, a ball seat and a dissolution ball. The inner wall of the completion casing is provided with limiting components in the corresponding positions between adjacent modification layers. The perforation pipe string, the ball seat and the dissolution ball are all located in the completion casing. The perforation pipe string is connected with the ball seat and used for controlling and delivering the ball seat. The ball seat is used for containing the dissolution ball. The limiting components are pressed by the ball seat so that the ball seat can be fixed in the completion casing, and thus a blocking layer between the adjacent modification layers is formed. The dissolution ball can be dissolved only after encountering water for a preset period of time. According to the ball seat packing multi-cluster perforation fracturing string and the construction method, an operator does not need to remove the ball seat and the dissolution ball on the blocking layer with a drill bit by drilling, and the situations that a drilling tool is jammed, and the casing is damaged by the drill bit are avoided; and in addition, the construction time is shortened, and the construction cost is reduced.
Description
Technical field
The present invention relates to oil-gas field fracturing renovation technique, particularly relate to a kind of ball seat and insulate many bunches of perforating and fracturings
Tubing string and construction method.
Background technology
At present, the pressure break mode of oil gas field multilamellar mainly has fixed tubular column hydraulic sand blasting pressure break, and bore hole is sealed
Every device pressure break, drag the coiled tubing underseal of tubing string, back-up sand pressure break and waterpower pumping drilling bridging plug
Pressure break etc..
Wherein, the method for waterpower pumping drilling bridging plug pressure break is: use hydraulic pump by perforating gun and
Drilling bridging plug hydraulic pump is delivered in pit shaft, after carrying out setting and insulating pit shaft by drilling bridging plug, then
Carrying out perforation, fracturing work, drilling bridging plug brill is removed different oil-gas Layer in realizing pit shaft by the later stage
Latus rectum up and down.
Not only expend the time when drilling bridging plug being carried out and boring except operation long, but also card easily occurs
Brill, the situation of bit breakage sleeve pipe.
Summary of the invention
The present invention provides a kind of ball seat to insulate many bunches of perforating and fracturing tubing strings and construction method, to overcome existing skill
Defect existing for art.
The present invention provides a kind of ball seat to insulate many bunches of perforating and fracturing tubing strings, including: completion casing, perforation pipe
String, ball seat and dissolving ball；
Position corresponding between adjacent transformation layer on described completion casing inwall is provided with limiting component；
Described perforation pipe string, described ball seat and described dissolving ball are respectively positioned in described completion casing；
Described perforation pipe string is connected with described ball seat, is used for controlling and deliver described ball seat；
Described ball seat is used for accommodating described dissolving ball, and described ball seat compresses described limiting component to be fixed on
Forming the plugged zone between described adjacent transformation layer in described completion casing, wherein, water met by described dissolving ball
Reach ability solubilized after Preset Time.
Further, including 2 described limiting components, described 2 limiting components are with described completion casing
Setting substantially symmetrical about its central axis.
Further, the cross section of described ball seat is rounded, and cutting from one end of described ball seat to the other end
Face area is gradually increased, and one end that wherein area of section is little compresses with described limiting component, and area of section is big
One end be provided with arc groove to accommodate described dissolving ball.
Further, described perforation pipe string by cable, torpedo, head harness, magnetic locator, weighted lever,
Perforating gun, ball seat hole enlargement tool, ball seat are delivered instrument and are sequentially connected with composition.
Further, described perforating gun is many bunches of perforating guns.
Further, described ball seat is delivered instrument and is connected with described ball seat, is used for delivering described ball seat.
Further, described ball seat hole enlargement tool is connected with described ball seat, is used for controlling described ball seat expanding.
Further, described limiting component is provided with connector, right between described adjacent transformation layer
The holding tank of described connector it is provided with on the inwall at described completion casing answered；
Described connector is connected in described holding tank.
Further, described limiting component is provided with bolt, corresponding between described adjacent transformation layer
Described completion casing at inwall on be provided with screw；
Described bolt is screwed onto in described screw.
The present invention provides a kind of ball seat to insulate the construction method of many bunches of perforating and fracturing tubing strings, it is adaptable to above-mentioned institute
Stating ball seat and insulate many bunches of perforating and fracturing tubing strings, the method includes:
By in completion casing lower going-into-well cylinder, and reinforce described pit shaft, in described pit shaft, have g section to transform layer,
Wherein, g is natural number；
Clean described pit shaft；
N-th section of transformation layer is carried out fracturing work, and wherein, n is natural number less than or equal to g, n；
In utilizing ground hydraulic pump group that perforation pipe string and ball seat hydraulic pump are delivered to completion casing described n-th section
Before limiting component between transformation layer and (n+1)th section of transformation layer；
Described perforation pipe string control described ball seat expanding, and throw in expanding after ball seat；
Utilize described perforation pipe string that described (n+1)th section of transformation layer is carried out perforation；
Described perforation pipe string is proposed described pit shaft；
Utilize described ground hydraulic pump by dissolve ball be pumped to described expanding after ball seat on, then ball will be dissolved
And described expanding after ball seat be together pumped to described n-th section transformation layer and (n+1)th section transformation layer between
On described limiting component, form sealing layer, by described n-th section of transformation layer packing；
Repeat above-mentioned operation, until the described g section transformation whole fracturing work of layer completes.
Further, described fracturing work is light casing fracturing operation or hydraulic jetting fracturing operation.
Further, described perforation is many showers hole.
The ball seat of the present invention insulates many bunches of perforating and fracturing tubing strings, by changing adjacent on completion casing inwall
Make position corresponding between layer and be respectively arranged with limiting component；Utilize ground hydraulic pump group by perforation pipe string
And ball seat hydraulic pump deliver to completion casing in before limiting component between adjacent transformation layer；By ground control
The ball seat hole enlargement tool of unit control perforation pipe string, by expanding for current ball seat, controls perforation pipe string the most again
Ball seat deliver instrument and the ball seat after the most expanding is thrown in depart from；By terrestrial contr by perforation pipe
String proposes the completion casing in pit shaft；Utilize ground hydraulic pump by dissolve ball be pumped into expanding after ball
On seat, then by dissolve ball with expanding after ball seat be together pumped on the limiting component between adjacent transformation layer,
Form sealing layer, will currently transform layer and insulate.Wherein, the material of ball seat can be with the material dissolving ball
Unanimously, after waiting layer to be rebuilt all to transform, ball seat recovers the most molten with dissolving ball with the water temperature in pit shaft
Solving, residue returns out ground, downhole well fluid Path Setup with returning discharge opeing.Need not plugged zone with drill bit
Upper ball base removes with dissolving round bur, has stopped bit freezing, the situation of bit breakage sleeve pipe.It addition, also save
Engineering time and operating expenses.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under,
Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 a is the structural representation that ball seat of the present invention insulates many bunches of perforating and fracturing tubing string embodiments；
Fig. 1 b is the another structural representation that ball seat of the present invention insulates many bunches of perforating and fracturing tubing string embodiments；
Fig. 2 is the perforation pipe string structure signal that ball seat of the present invention insulates many bunches of perforating and fracturing tubing string embodiments
Figure；
Fig. 3 is the flow chart that ball seat of the present invention insulates the construction method embodiment of many bunches of perforating and fracturing tubing strings.
Description of reference numerals:
11: completion casing；
12: perforation pipe string；
121: cable；
122: torpedo；
123: head harness；
124: magnetic locator；
125: weighted lever；
126: perforating gun；
127: ball seat hole enlargement tool；
128: instrument delivered by ball seat；
13: ball seat；
14: dissolve ball；
15: limiting component；
16: terrestrial contr.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Fig. 1 a is the structural representation that ball seat of the present invention insulates many bunches of perforating and fracturing tubing string embodiments, Fig. 1 b
The another structural representation of many bunches of perforating and fracturing tubing string embodiments is insulated for ball seat of the present invention.Such as Fig. 1 a, figure
Shown in 1b, the ball seat of the present embodiment insulate many bunches of perforating and fracturing tubing strings 01 may include that completion casing 11,
Perforation pipe string 12, ball seat 13 and dissolving ball 14.On described completion casing 11 inwall adjacent transformation layer it
Between corresponding position be provided with limiting component 15；Described perforation pipe string 12, described ball seat 13 and described
Dissolve ball 14 to be respectively positioned in described completion casing 11；Described perforation pipe string 12 is connected with described ball seat 13,
For controlling and delivering described ball seat 13；Described ball seat 13 is used for accommodating described dissolving ball 14, and described
Ball seat 13 compresses described limiting component 15 to form described adjacent transformation in being fixed on described completion casing 11
Plugged zone between Ceng, wherein, described dissolving ball 14 is met water and is reached ability solubilized after Preset Time.
Such as, described dissolving ball 14 in the water less than or equal to 70 DEG C, in 5 hours can voltage stabilizing 70MPa,
Meet light casing fracturing or the hydraulic jetting fracturing operation demand to pressure, at the water more than or equal to 70 DEG C
In, it is completely dissolved in 15 days.After all having transformed etc. layer to be rebuilt, dissolve ball 14 with the water in pit shaft
Temperature is recovered gradually to dissolve, and residue returns out ground with returning discharge opeing.Need exist for explanation, dissolve ball 14
Material can be configured according to actual needs, is not limited at this.
Optionally, described completion casing 11 inwall of corresponding between adjacent transformation layer position sets
Being equipped with 2 described limiting components 15, described 2 limiting components 15 are with the center of described completion casing 11
Axial symmetry is arranged, such as limiting component 15 corresponding at 101 or 102 in Fig. 1 a, Fig. 1 b.
Wherein, described limiting component 15 by being welded and fixed, can block with described completion casing 11 inwall
Connect fixing, be spirally connected fixing.
Concrete connect and fix for: on described limiting component 15, be provided with connector, with adjacent transformation
It is provided with connector holding tank on the inwall at described completion casing 11 corresponding between Ceng.Described limiting section
Connector on part 15 is connected to the inwall at described completion casing 11 corresponding between adjacent transformation layer
On holding tank in.
Concrete being spirally connected is fixed as: be provided with bolt on described limiting component 15, with adjacent transformation layer
Between be provided with screw on inwall at corresponding described completion casing 11.On described limiting component 15
Bolt is screwed onto in the screw on the inwall at described completion casing 11 corresponding between adjacent transformation layer.
The cross section of described ball seat 13 is rounded, and from the face, cross section of one end of described ball seat 13 to the other end
Amassing and be gradually increased, one end that wherein area of section is little compresses with described limiting component 15, and area of section is big
One end is provided with arc groove to accommodate described dissolving ball 14, as shown in Figure 1 b.It addition, described ball seat
The material of 13 can be consistent with the material of described dissolving ball 14, after waiting layer to be rebuilt all to transform, and ball
Seat 13 recovers gradually to dissolve with the water temperature in pit shaft with dissolving ball 14, and residue returns out ground with returning discharge opeing.
Fig. 2 is the perforation pipe string structure signal that ball seat of the present invention insulates many bunches of perforating and fracturing tubing string embodiments
Figure.As in figure 2 it is shown, perforation pipe string 12 is by cable 121, torpedo 122, head harness 123, magnetic orientation
Device 124, weighted lever 125, perforating gun 126, ball seat hole enlargement tool 127, ball seat are delivered instrument 128 and are depended on
Secondary connection forms.
Wherein, described ball seat hole enlargement tool 127 is connected with described ball seat 13, is used for controlling described ball seat
13 is expanding；
Ball seat is delivered instrument 128 and is connected with described ball seat 13, is used for being shipped to the ball seat 13 after expanding
Appointment position in completion casing 11, this appointment position is controlled magnetic locator 124 by terrestrial contr 16
Determine；
Terrestrial contr 16 controls perforating gun 126 and transformation layer is carried out single cluster perforating job or many showers
Hole operation.
The ball seat of the present embodiment insulates many bunches of perforating and fracturing tubing strings, by completion casing inwall adjacent
Between transformation layer, corresponding position is respectively arranged with limiting component；Utilize ground hydraulic pump group by perforation pipe
String and ball seat hydraulic pump deliver to completion casing in before limiting component between adjacent transformation layer；Controlled by ground
The ball seat hole enlargement tool of unit processed control perforation pipe string, by expanding for current ball seat, controls perforation pipe the most again
The ball seat of string is delivered instrument and is thrown in by the ball seat after the most expanding and depart from；By terrestrial contr by perforation
Pipe string completion casing in pit shaft proposes；Utilize ground hydraulic pump by dissolve ball be pumped into expanding after
On ball seat, then by dissolve ball with expanding after ball seat be together pumped into the limiting component between adjacent transformation layer
On, form sealing layer, will currently transform layer and insulate.Wherein, the material of ball seat can be with dissolving ball
Material is consistent, after waiting layer to be rebuilt all to transform, ball seat with dissolve ball with the water temperature in pit shaft recover by
Gradually dissolving, residue returns out ground, downhole well fluid Path Setup with returning discharge opeing.Need not will envelope with drill bit
Blocking layer upper ball base removes with dissolving round bur, has stopped bit freezing, the situation of bit breakage sleeve pipe.It addition, also save
Engineering time and operating expenses are saved.
Fig. 3 is the flow chart that ball seat of the present invention insulates the construction method embodiment of many bunches of perforating and fracturing tubing strings,
As it is shown on figure 3, the ball seat that this method is be applicable to above-described embodiment insulates many bunches of perforating and fracturing tubing strings, bag
Include following steps:
Step 301, by completion casing lower going-into-well cylinder, and reinforce described pit shaft, in described pit shaft, have g
Section transformation layer, wherein, g is natural number.
Such as, by completion casing lower going-into-well cylinder, and reinforce pit shaft.Wherein it is desired in the pit shaft of transformation
Transformation layer be 3 layers.
Step 302, clean described pit shaft.
Step 303, n-th section of transformation layer being carried out fracturing work, wherein, n be oneself less than or equal to g, n
So number.
1st section of transformation layer is carried out fracturing work.Wherein, fracturing work can be light casing fracturing operation
Or hydraulic jetting fracturing operation.
Step 304, ground hydraulic pump group is utilized perforation pipe string and ball seat hydraulic pump to be delivered in completion casing
Before limiting component between described n-th section of transformation layer and (n+1)th section of transformation layer.
Utilize the 1st section of transformation in perforation pipe string and ball seat hydraulic pump are delivered to completion casing by pump group in the surface water
Before limiting component between layer and the 2nd section of transformation layer.Wherein, perforation pipe string is by cable, torpedo, horse cage
Head, magnetic locator, weighted lever, perforating gun, ball seat hole enlargement tool, ball seat are delivered instrument and are sequentially connected with group
Become.
Ball seat hole enlargement tool is connected with ball seat, is used for controlling described ball seat expanding；Ball seat deliver instrument also with
Ball seat connects, for the appointment position being shipped in completion casing by the ball seat after expanding, this appointment position
Determined by magnetic locator.
Step 305, described perforation pipe string control described ball seat expanding, and throw in expanding after ball seat.
By the ball seat hole enlargement tool of terrestrial contr control perforation pipe string by expanding for current ball seat, make
It becomes big.Control the ball seat of perforation pipe string the most again to deliver instrument and thrown in by the ball seat after the most expanding and depart from.
Step 306, utilize described perforation pipe string to described (n+1)th section transformation layer carry out perforation.
The perforating gun being controlled perforation pipe string by terrestrial contr carries out single cluster perforation to the 2nd section of transformation layer
Or many showers hole.
Step 307, by described perforation pipe string propose described pit shaft.
Perforation pipe string completion casing in pit shaft will be proposed by terrestrial contr.
Step 308, utilize described ground hydraulic pump by dissolve ball be pumped to described expanding after ball seat on,
Again by dissolve ball with described expanding after ball seat be together pumped to described n-th section and transform layer and (n+1)th section and change
Make on the described limiting component between layer, form sealing layer, by described n-th section of transformation layer packing.
Utilize ground hydraulic pump by dissolve ball be pumped into expanding after ball seat on, then will dissolve ball with expanding after
Ball seat be together pumped into the 1st section transformation layer and the 2nd section transformation layer between limiting component on, formed envelope
Interlayer, thus insulates the 1st section of transformation layer.
Step 309, the operation of repetition step 303 to step 308, until described g section transformation layer is whole
Fracturing work completes.
2nd section of transformation layer is carried out fracturing work；Utilize in the surface water pump group by perforation pipe string and ball seat water
Before the limiting component that power is pumped in completion casing between the 2nd section of transformation layer and the 3rd section of transformation layer；Pass through
Terrestrial contr controls the ball seat hole enlargement tool of perforation pipe string by expanding for current ball seat so that it is become big；
The perforating gun being controlled perforation pipe string by terrestrial contr carries out perforation to the 3rd section of transformation layer；By ground
Face control unit will propose perforation pipe string completion casing in pit shaft；Ground hydraulic pump is utilized to dissolve
Ball be pumped into expanding after ball seat on, then by dissolve ball with expanding after ball seat be together pumped into the 2nd section and change
Make on the limiting component between layer and the 3rd section of transformation layer, form sealing layer, thus by the 2nd section of transformation
Layer insulates；3rd section of transformation layer is carried out fracturing work.Thus by 3 layers of layer to be rebuilt in pit shaft
All fracturing work is complete.
After construction terminates, whole dissolving balls and ball seat in pit shaft recover gradually to dissolve with water temperature in well,
Residue after dissolving returns discharge ground through open flow, and in completion tubular column, latus rectum is consistent, and pit shaft is completely easy to the later stage
Operation.
The ball seat of the present embodiment insulates the construction method of many bunches of perforating and fracturing tubing strings, by completion casing
Position corresponding between adjacent transformation layer on wall is respectively arranged with a limiting component；Utilize the surface water
Power pump group limiting component between adjacent transformation layer in perforation pipe string and ball seat hydraulic pump are delivered to completion casing
Before；The ball seat hole enlargement tool of perforation pipe string is controlled by expanding for current ball seat, so by terrestrial contr
After control the ball seat of perforation pipe string again and deliver instrument and the ball seat after the most expanding is thrown in depart from；Utilize perforation
Pipe string carries out perforation to next transformation layer；By terrestrial contr by perforation pipe string completion in pit shaft
Sleeve pipe proposes；Utilize ground hydraulic pump by dissolve ball be pumped into expanding after ball seat on, then ball will be dissolved
Together it is pumped on the limiting component between adjacent transformation layer with the ball seat after expanding, forms sealing layer, will
Current transformation layer insulates.Wherein, the material of ball seat can be consistent with the material dissolving ball, waits to be rebuilt
After layer has all been transformed, ball seat recovers gradually to dissolve with the water temperature in pit shaft with dissolving ball, and residue is with the row of returning
Liquid returns out ground, downhole well fluid Path Setup.Need not plugged zone upper ball base and dissolving ball with drill bit
Brill removes, and has stopped bit freezing, the situation of bit breakage sleeve pipe.It addition, also save engineering time and construction
Expense.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to foregoing embodiments, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it,
Or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, and
The essence not making appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a ball seat insulates many bunches of perforating and fracturing tubing strings, it is characterised in that including: completion casing, penetrate
Hole pipe string, ball seat and dissolving ball；
Position corresponding between adjacent transformation layer on described completion casing inwall is provided with limiting component；
Described perforation pipe string, described ball seat and described dissolving ball are respectively positioned in described completion casing；
Described perforation pipe string is connected with described ball seat, is used for controlling and deliver described ball seat；
Described ball seat is used for accommodating described dissolving ball, and described ball seat compresses described limiting component to be fixed on
Forming the plugged zone between described adjacent transformation layer in described completion casing, wherein, water met by described dissolving ball
Reach ability solubilized after Preset Time.
Ball seat the most according to claim 1 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that bag
Including 2 described limiting components, described 2 limiting components are with the setting substantially symmetrical about its central axis of described completion casing.
Ball seat the most according to claim 2 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that institute
The cross section stating ball seat is rounded, and the area of section from one end of described ball seat to the other end is gradually increased,
One end that wherein area of section is little compresses with described limiting component, and one end that area of section is big is provided with arc
Groove is to accommodate described dissolving ball.
Ball seat the most according to claim 1 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that institute
State perforation pipe string expanding by cable, torpedo, head harness, magnetic locator, weighted lever, perforating gun, ball seat
Instrument, ball seat are delivered instrument and are sequentially connected with composition.
Ball seat the most according to claim 4 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that institute
Stating perforating gun is many bunches of perforating guns.
Ball seat the most according to claim 4 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that institute
State ball seat delivery instrument to be connected with described ball seat, be used for delivering described ball seat.
Ball seat the most according to claim 4 insulates many bunches of perforating and fracturing tubing strings, it is characterised in that institute
State ball seat hole enlargement tool to be connected with described ball seat, be used for controlling described ball seat expanding.
8. insulating many bunches of perforating and fracturing tubing strings according to the arbitrary described ball seat of claim 1-7, its feature exists
In, described limiting component is provided with connector, corresponding described complete between described adjacent transformation layer
The holding tank of described connector it is provided with on inwall at casing；
Described connector is connected in described holding tank.
9. insulating many bunches of perforating and fracturing tubing strings according to the arbitrary described ball seat of claim 1-7, its feature exists
In, described limiting component is provided with bolt, described completion corresponding between described adjacent transformation layer
It is provided with screw on inwall at sleeve pipe；
Described bolt is screwed onto in described screw.
10. a ball seat insulates the construction method of many bunches of perforating and fracturing tubing strings, it is adaptable to such as claim 1-9
Arbitrary described ball seat insulates many bunches of perforating and fracturing tubing strings, it is characterised in that including:
By in completion casing lower going-into-well cylinder, and reinforce described pit shaft, in described pit shaft, have g section to transform layer,
Wherein, g is natural number；
Clean described pit shaft；
N-th section of transformation layer is carried out fracturing work, and wherein, n is natural number less than or equal to g, n；
In utilizing ground hydraulic pump group that perforation pipe string and ball seat hydraulic pump are delivered to completion casing described n-th section
Before limiting component between transformation layer and (n+1)th section of transformation layer；
Described perforation pipe string control described ball seat expanding, and throw in expanding after ball seat；
Utilize described perforation pipe string that described (n+1)th section of transformation layer is carried out perforation；
Described perforation pipe string is proposed described pit shaft；
Utilize described ground hydraulic pump by dissolve ball be pumped to described expanding after ball seat on, then ball will be dissolved
And described expanding after ball seat be together pumped to described n-th section transformation layer and (n+1)th section transformation layer between
On described limiting component, form sealing layer, by described n-th section of transformation layer packing；
Repeat above-mentioned operation, until the described g section transformation whole fracturing work of layer completes.
11. methods according to claim 10, it is characterised in that described fracturing work is light sleeve pipe
Fracturing work or hydraulic jetting fracturing operation.
12. methods according to claim 10, it is characterised in that described perforation is many showers hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510090783.1A CN105986799B (en) | 2015-02-28 | 2015-02-28 | Ball seat insulates more cluster perforating and fracturing tubing strings and construction method |
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| CN201510090783.1A CN105986799B (en) | 2015-02-28 | 2015-02-28 | Ball seat insulates more cluster perforating and fracturing tubing strings and construction method |
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| CN106593387A (en) * | 2016-12-21 | 2017-04-26 | 中国石油天然气股份有限公司 | Sectional multi-cluster fracturing method of horizontal well |
| CN106761642A (en) * | 2016-12-21 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of straight well pinpoints multistage fracturing methods and applications |
| CN106917610A (en) * | 2017-05-11 | 2017-07-04 | 中国石油集团川庆钻探工程有限公司 | Staged fracturing method is temporarily blocked up in many cluster abrasive perforating filling sandpipe posts and back-up sand |
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| CN106593387B (en) * | 2016-12-21 | 2019-11-08 | 中国石油天然气股份有限公司 | A method of realizing the more cluster pressure breaks of horizontal well in segments |
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