CN206233913U - One kind is without bridging plug multistage fracturing device - Google Patents
One kind is without bridging plug multistage fracturing device Download PDFInfo
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- CN206233913U CN206233913U CN201620934220.6U CN201620934220U CN206233913U CN 206233913 U CN206233913 U CN 206233913U CN 201620934220 U CN201620934220 U CN 201620934220U CN 206233913 U CN206233913 U CN 206233913U
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- pressure break
- fracturing
- interval
- bridging plug
- diverting agent
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Abstract
The application is related to oil gas field of engineering technology, and more particularly to a kind of shale gas are without bridging plug multistage fracturing device.The device includes：The second component for the first assembly constructed to the first interval and for being constructed to other intervals, wherein, first assembly includes the first detent mechanism, first igniter head, the first perforating gun and the fracturing fluid conveying mechanism that are concatenated by oil pipe；Second component includes the cable, end, the second detent mechanism, second igniter head, the second perforating gun and the diverting agent pumping mechanism that are sequentially connected.The instrument of the device one-level pressure break of the utility model embodiment is different from the instrument of follow-up pressure break, after completing one-level pressure break, temporarily blocked using diverting agent, follow-up pressure break mode is different from one-level pressure break, it is to open not transforming new stratum after being raised by bottom pressure, new crack is opened, so as to realize dynamic classification, without using bridging plug.
Description
Technical field
The application is related to oil gas field of engineering technology, and more particularly to one kind is without bridging plug multistage fracturing device.
Background technology
The form of waterpower multistage fracturing is mainly taken in the exploitation of shale gas at this stage, and multistage fracturing can improve hydraulic fracturing
Efficiency, reduce using and reducing work hours for water.Between hydraulic fracturing constructions at different levels, the mode of lower bridging plug is usually taken,
Each pressure break level is spaced, after every grade of pressure break perforation terminates, bridging plug is ground off using continuous tubing drill, be whole pit shaft connection,
Reach the condition of aerogenesis.
In the construction of waterpower multistage fracturing at this stage, the usual technique of use is to complete to be classified by using bridging plug, lower bridge
Plug and bridging plug bore mill workload, generate unnecessary cost and the engineering time.
The content of the invention
The application is mainly solving the technical problems that provide a kind of new shale gas multistage fracturing diverting agent and application
The method without bridging plug multistage fracturing that the diverting agent is implemented, enables to Soluble Fiber to form highdensity spatial network knot
Structure, effectively extension temporarily block up the time, reach instead of the purpose of bridging plug, and existing multistage fracturing work can be changed using the diverting agent
Skill.
In order to solve the above technical problems, the technical scheme that the utility model embodiment is used is：
There is provided one kind without bridging plug multistage fracturing device, including for the first interval is constructed
One component and the second component for being constructed to other intervals, wherein,
First assembly includes the first detent mechanism, first igniter head, the first perforating gun and the fracturing fluid that are concatenated by oil pipe
Conveying mechanism；
Second component includes the cable, end, the second detent mechanism, second igniter head, the second perforating gun that are sequentially connected
With diverting agent pumping mechanism.
Preferably, second component also includes the exacerbation mechanism being located between end and the second detent mechanism, described
Diverting agent pumping mechanism includes pressure detector.
The beneficial effect of the embodiment of the present application is：It is different from the situation of prior art, the device of the utility model embodiment
The instrument of one-level pressure break is different from the instrument of follow-up pressure break, after completing one-level pressure break, is temporarily blocked using diverting agent, subsequently
Pressure break mode is different from one-level pressure break, is to open not transforming new stratum after being raised by bottom pressure, new crack is opened, so that real
Existing dynamic classification, without using bridging plug.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, below will be to make needed for the embodiment of the present application
Accompanying drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present application, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 be the utility model embodiment device in first assembly structural representation；
Fig. 2 be the utility model embodiment device in the second component structural representation.
Specific embodiment
In order that the object, technical solution and advantage of the application become more apparent, it is right below in conjunction with drawings and Examples
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Some embodiments of theme disclosed in the utility model are probably to be explained with the treatment of horizontal well, but equally
Suitable for the well of any direction.It should also be appreciated by one skilled in the art that throughout the specification, when concentration or the scope of consumption
When being described as available or suitable etc., its be intended to represent any and each concentration within the range or consumption (including
End points) it is considered as being stated.Additionally, each numerical value is considered as through term " about " modification once (unless clearly
So modification), then it is considered as again without so modification, unless be otherwise noted within a context.For example, " scope of 1-10 " should
It is understood to refer to each and each the possible numerical value along the successive range of about 1- about 10.In other words, when in statement one
During fixed scope, even if only having several specific data points to be positively identified or refer within the range, even if or at this
In the range of there is no data point to be mentioned, it should also be appreciated that utility model people of the present utility model is appreciated and understood that in the range of this
Any and all of data point is regarded as specifically referring to, and utility model people of the present utility model possesses gamut
With the institute in the range of this little.It is to be further understood that crack is temporarily blocked up/closed includes that partial fracture temporarily blocks up/closure.
The utility model embodiment is provided without bridging plug multistage fracturing device, is referred to shown in Fig. 1 and Fig. 2, and it includes using
The second component 20 in the first assembly 10 constructed to the first interval and for being constructed to other intervals.Wherein, first group
Part is defeated including the first detent mechanism 102, first igniter head 103, the first perforating gun 104 and the fracturing fluid concatenated by oil pipe 101
Send mechanism 105.Second component 20 includes that the cable 201 being sequentially connected, end 202, the second detent mechanism 203, second are lighted a fire
First 204, second perforating gun 205 and diverting agent pumping mechanism 206.
Further, the second component 20 also includes the exacerbation mechanism between the detent mechanism 203 of end 202 and second
207, the diverting agent pumping mechanism 206 includes pressure detector 2061.
The device of the utility model embodiment is used for without bridging plug multistage fracturing method, and pressure is caused because fracturing process is improved
Split device unlike the prior art, and the improvement of fracturing process is due to being constructed using new diverting agent, in order to more
The detailed technical scheme for illustrating the application, carries out the introduction of above-mentioned diverting agent first, and the diverting agent includes：Carry liquid；Can drop
Solution polyester fiber；Proppant；And linear colloid.
As used herein, term hydraulic fracturing treatment refers to be pumped fluid into well to create with powerful hydraulic pump
Build the technique that enough down-hole pressures make formation fracture or pressure break.This fluid for causing that proppant can be carried is injected in stratum,
So as to the high osmosis sand region for producing fluid to flow through.Once removing hydraulic pressure, proppant remains at original position, therefore support
Agent is opened crack and strengthens fluid and flows into well or flowed out from well.The utility model is added in certain condition in liquid is carried
Under soluble temporarily stifled fiber, because Soluble Fiber can form highdensity spacial framework, this structure possess compared with
Strong shut-off capacity, biodegradable fiber has preferably temporarily stifled effect in acid condition, so as to greatly improve temporarily blocking layer
Intensity.
By weight, above-mentioned diverting agent includes：90~95 carry liquid, more than 2.0 biodegradable polyester fibers, 20~35
Proppant, 0.45 linear glue.Further, fibre length be more than 5mm, can be 5~10mm, or>10mm, carries liquid
Including：The guanidine glue of 0.2~0.6 weight portion, the bactericide of 0.1~0.5 weight portion, the viscous steady agent of 0.3~0.7 weight portion, 0.3~
The sodium carbonate of the cleanup additive of 0.8 weight portion and 0.1~0.5 weight portion.
Because Soluble Fiber forms highdensity spacial framework, the time is temporarily blocked up in effectively extension, reaches and replaces bridging plug
Purpose.Plugging effect is good, automatic de-plugging after pressure break, acidifying, to reservoir fanout free region.Those of ordinary skill in the art should know
Dawn, in specific implementation process, the temperature and pressure adjustment according to construction interval, and duration needed for pressure break, adjust the utility model
The diverting agent proportioning and acid concentration of embodiment, reach the transformation current reservoir period, necessary to the plugging effect of fractured interval
When, can repeat temporarily stifled to temporarily blocking up reservoir, to complete the continuous pressure break of multi-section multi-layer.
Proppant can be solid particle, for example, proppant is selected from sand, bead, ceramic particle, polymeric beads or hollow
One or more in glass marble.
Secondly, a kind of above-mentioned diverting agent of application carries out the method without bridging plug multistage fracturing, first by the side that fluid power is pushed
First assembly 10 is delivered to the first interval by formula, after carrying out perforation, pressure break, then first assembly 10 is proposed, reuses cable biography
Second component 20 is delivered to the first interval by defeated mode, and the first interval fracturing fracture is carried out with the slurries of above-mentioned diverting agent
Temporarily closure；Secondly, subsequent construction is carried out with the second component 20, perforation is carried out to the second interval, the second interval is in the first interval
Crack is formed by pressure break in the presence of sealing agent, the second interval fracturing fracture is temporarily sealed with the slurries of above-mentioned diverting agent
It is stifled；Then perforation is carried out to next interval, the interval forms crack in the presence of last layer section sealing agent by pressure break, with above-mentioned
The slurries of diverting agent the interval fracturing fracture is temporarily blocked, the construction of each interval is completed after multistage is repeated；Most
Diverting agent is dissolved with acidic leach medium afterwards, passage, completion, open flow is formed.
Specifically, the method includes：(1) drifting；(2) multistage fracturing completion；(3) acid fracturing dissolving；Wherein, step (2) is entered
Include to one step：
(21) first assembly 10 is delivered to the first interval of the pit shaft that step (1) is formed by way of fluid power is pushed
Place, the first detent mechanism 102 positions to the lowered position of first assembly 10,104 points of first igniter head 103 and the first perforating gun
Do not lighted a fire and perforation, completed the first interval perforation；
(22) pumping into fracturing fluid in the first interval of pit shaft with fracturing fluid conveying mechanism 105 in first assembly 10 again is carried out
First interval pressure break；
(23) first assembly 10 is proposed, the second component 20 is delivered to the first interval by the mode for reusing cable transmission,
Positioned with the lowered position of 203 pairs of the second components 20 of the second detent mechanism, with the diverting agent pumping mechanism of the second component 20
The slurries of 206 pumping diverting agents are temporarily blocked to the first interval fracturing fracture；
(24) the second component 20 is above carried into the precalculated position to the second interval, second point by the second detent mechanism 203
The perforating gun 205 of duration and degree of heating 204 and second is lighted a fire and perforation respectively, completes the second interval perforation；
(25) second intervals form crack in the presence of the first interval sealing agent by pressure break；
(26) slurries of diverting agent are pumped to the second interval fracturing fracture with the diverting agent pumping mechanism 206 of the second component 20
Temporarily blocked；
(27) according to completion number of fragments, repeat step (24) to step (26) completes each layer after multistage is repeated
Section construction；
Wherein, after pressure break terminates, open flow is not carried out.
In diverting agent pumping procedure, the fracture pressure of pressure detector 2061 of diverting agent pumping mechanism 206 is examined
Survey.
Further, the first interval pressure break is light casing fracturing in the step (22), after the completion of perforation, from sleeve pipe injection
Fracturing fluid, carries out pressing crack construction.Step (2) also includes：(20) provide include carrying liquid, biodegradable polyester fiber, proppant and
The slurries of the diverting agent of linear colloid.
The method mainly applies know-why of the temporary stall of fiber dynamic steering fracturing technique and broadband to fracturing technique.Its
In, fiber dynamic steering fracturing technique：Using biodegradable fiber and conventional support agent material as temporary stifled material, one-level is completed
In the post-fracturing steering stage, temporarily stifled material (diversion agent) is pumped into, temporarily stifled diversion agent temporarily blocks up crack in nearly pit shaft, forces liquid pressure
New interval is opened, the purpose of next layer of transformation is turned to so as to reach.Main feature has：Temporarily stifled diverting material is not expensive, undulation degree
Expecting can be degradable, and coordinating microseismic to monitor can real-time adjustment infusion scheme, maximization reservoir contact, applicable formation temperature
Up to 120 degrees Celsius.The temporary stall in broadband is to fracturing technique：After the completion of every one-level pressure break, by infusion biodegradable fiber
The multiple dimensioned degradable granule of migration is aided in, temporary closure is carried out to this grade of fracturing fracture mouthful, so that when improving infusion
Bottom pressure, the complexity of new seam, increase Number of Fractures and crack is opened on the stratum that opening stress is higher, script is not transformed.Temporarily
Stifled diverting material is biodegradable fiber and multiple dimensioned degradable polymer particle, behind diverting agent particle injection stratum, big particle diameter
Particle intercepts in crack porch other materials, while small size particle effectively reduces sealing permeability and realizes temporarily closure
Isolation.With diverting agent while the biodegradable fiber of infusion, then serve effectively support and stablize to the granular materials in fracturing fluid
Effect, it is to avoid it scatter in tubing string, and can strengthen bridge blinding effect.Main feature：Material reliability is temporarily blocked up, using smaller
Volume material is that can reach temporarily stifled effect, and material can be degradable under the conditions of bottom hole temperature (BHT), is applicable bottom hole temperature (BHT) 60-177 and takes the photograph
Family name's degree.
The beneficial effect of the method for the utility model embodiment：1. temporarily stifled diverting material is not expensive；2. fibrous material can be complete
Degradable；3. the use of smaller size smaller material is that can reach temporarily stifled effect；4. coordinating microseismic to monitor can real-time adjustment infusion
Scheme, adjustment single-stage temporarily blocks up the time, maximizes reservoir contact；5. formation temperature is applicable up to 60-177 degrees Celsius.
Embodiment
Present embodiments provide it is a kind of application it is above-mentioned carry out the method without bridging plug multistage fracturing without bridging plug multistage fracturing device,
Including following implementation steps：
Step 1) drifting：Using gauguste cutter drifting to artificial bottom of a well, it is ensured that pit shaft is clean.
Step 2) first paragraph perforation, pressure break：First paragraph perforation is carried out using tubing transmission, perforation hole rifle is played, to first paragraph
Carry out light casing fracturing, pressure break not open flow, closing well.
Specifically, first assembly 10 is delivered to the ground floor of the pit shaft that step (1) is formed by way of fluid power is pushed
At section, the first detent mechanism 102 is positioned to the lowered position of first assembly 10, first igniter head 103 and the first perforating gun 104
Lighted a fire respectively and perforation, completed the first interval perforation；Again with fracturing fluid conveying mechanism 105 in first assembly 10 in pit shaft
Fracturing fluid is pumped into first interval carries out the first interval pressure break.
Step 3) decentralization perforation tool string：Enter big orifice bridging plug, perforation tool string under wireline operation, after reaching 30 ° of hole deviations,
Ground fracturing pump truck pumping perforation tool string to precalculated position；
Specifically, first assembly 10 is proposed, the second component 20 is delivered to ground floor by the mode for reusing cable transmission
Section, is positioned with the lowered position of 203 pairs of the second components 20 of the second detent mechanism.
Step 4) material is blocked up by infusion fiber/temporarily, temporary closure is carried out to the first order/upper level pressure break sealing.
Specifically, the slurries of diverting agent are pumped to the first interval pressure break with the diverting agent pumping mechanism 206 of the second component 20
Crack is temporarily blocked.
Step 5) according to second segment perforation fragment position, gradually go up portable cable, multistep ignition perforation.
Specifically, the second component 20 is above carried into the precalculated position to the second interval, second by the second detent mechanism 203
The perforating gun 205 of igniter head 204 and second is lighted a fire and perforation respectively, completes the second interval perforation.
Step 6) play perforation hole tool string.
Specifically, the second component 20 is above carried into the precalculated position to follow-up interval by the second detent mechanism 203.
Step 7) temporarily stifled material is replaced fracturing fibre, forces liquid to press off new interval, so as to reach next layer of transformation
Purpose, not open flow after pressure break is complete, it is ensured that horizontal segment is remained without proppant.
Specifically, the slurries of diverting agent are pumped to the second interval pressure break with the diverting agent pumping mechanism 206 of the second component 20
Crack is temporarily blocked.
8) repeat step 3)~7), perforation, temporarily stifled, pressure break are descended successively to remaining interval, until completing whole interval pressure breaks
Operation；
Step 9) acid fracturing construction, after fibrous material dissolving, now pit shaft is connected with fracturing stratum；
Step 10) open flow, ask oily well yield, completion.
Application examples
By embodiment of the present utility model, without bridging plug fracturing device, some typical oil and gas reservoirs have necessarily applicant at home
Successful experience, have successful case in Sichuan-chongqing Region shale gas pressure break, three reservoir multistage fracturings high and refracturing.
1st, Z oil fields shale gas project：The item body makees multistage fracturing technology using pumping bridging plug perforation connection, flat in part
In platform/well, because casing deformation, perforation tool string are met under the fortuitous events such as card, perforation error, conventional pumping bridging plug perforation connection
When making fracturing technology and cannot implement, fiber dynamic steering fracturing technique is employed, success solves the above and asks in H5 and H6 platforms
Topic, smoothly completes fracture job.Additionally, with reference to geology engineering specifications, to improve Overall Reconstruction effect and efficiency of construction, being also adopted by
Dynamic steering fracturing technique overcomes reservoir heterogeneity, reaches the purpose for improving the transformation of perforation cluster and reservoir contact.
2nd, the multistage fracturing project of T blocks " three high " reservoir：For T block " three high " sandstone reservoir (high temperature, it is ultra-deep, super
High pressure), using dynamic steering fracturing technique, eliminate completion isolating tool and use, it is successfully made and is applied without bridging plug multistage fracturing
Work, is contrasted by with the average open-flow capacity of K blocks, and 60% is improve using the Absolute Open Flow of Gas Wells of dynamic steering fracturing reform.
Fully demonstrate dynamic steering fracturing technique (170 degrees Celsius of temperature, reservoir buried depth 7000m, pressure coefficient under severe conditions
1.8) applicability.
3rd, the fine and close oil project in C oil fields：Certain well due to cementing quality extreme difference, under the mechanical dissection mode such as conventional bridging plug, between level
Cementing concrete ring cannot ensure effectively packing, and employing dynamic classification technique carries out multistage transformation, successfully constructs, and test yield reaches
To 1.5 times of offset well；Another well is big due to a certain reservoir thickness, is especially developed every interlayer in layer, but with the stop interlayer of adjacent bed
Relatively thin, one side mechanical classification is difficult and failure risk is big, and the opposing party's surface layer internal classification is difficult, therefore using temporary stall to technique
Carry out dynamic classification and section reservoir long is effectively transformed, construction effect is notable.
Embodiments herein is the foregoing is only, the scope of the claims of the present utility model, every utilization is not thereby limited
Equivalent structure or equivalent flow conversion that present specification and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, be similarly included in the scope of patent protection of the application.
Claims (2)
1. one kind is without bridging plug multistage fracturing device, it is characterised in that including first assembly and use for being constructed to the first interval
In the second component constructed to other intervals, wherein,
First assembly includes that the first detent mechanism, first igniter head, the first perforating gun and the fracturing fluid that are concatenated by oil pipe are conveyed
Mechanism；
Second component include be sequentially connected cable, end, the second detent mechanism, second igniter head, the second perforating gun and temporarily
Blocking agent pumping mechanism.
2. it is according to claim 1 without bridging plug multistage fracturing device, it is characterised in that second component also includes being located at
Exacerbation mechanism between end and the second detent mechanism, the diverting agent pumping mechanism includes pressure detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620934220.6U CN206233913U (en) | 2016-08-24 | 2016-08-24 | One kind is without bridging plug multistage fracturing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620934220.6U CN206233913U (en) | 2016-08-24 | 2016-08-24 | One kind is without bridging plug multistage fracturing device |
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| Publication Number | Publication Date |
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| CN206233913U true CN206233913U (en) | 2017-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150429A (en) * | 2016-08-24 | 2016-11-23 | 江汉油田科瑞德石油工程技术（武汉）有限公司 | Shale gas is multistage splits pressure diverting agent, without bridging plug fracturing process and device |
-
2016
- 2016-08-24 CN CN201620934220.6U patent/CN206233913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150429A (en) * | 2016-08-24 | 2016-11-23 | 江汉油田科瑞德石油工程技术（武汉）有限公司 | Shale gas is multistage splits pressure diverting agent, without bridging plug fracturing process and device |
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Effective date of registration: 20171128 Address after: 430000 Hubei city of Wuhan province Kuanshan East Lake development zone two Road No. 1 International Business Center 3 Building No. 201 room 03 Patentee after: Jianghan Oilfield creed oil and Gas Engineering (Wuhan) Co., Ltd. Address before: 430073 Wuhan Province, East Lake City Development Zone, high tech Avenue, No. 999, No. Patentee before: Jianghan Oilfield Keruide Petroleum Engineering Technology (Wuhan) Co., Ltd. |