CN110331971A - A kind of reservoir reconstruction method of overlapping development horizontal well - Google Patents
A kind of reservoir reconstruction method of overlapping development horizontal well Download PDFInfo
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- CN110331971A CN110331971A CN201910717563.5A CN201910717563A CN110331971A CN 110331971 A CN110331971 A CN 110331971A CN 201910717563 A CN201910717563 A CN 201910717563A CN 110331971 A CN110331971 A CN 110331971A
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- reservoir
- shock wave
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- fracturing device
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Abstract
The present invention relates to a kind of reservoir reconstruction methods of overlapping development horizontal well, implement reservoir reconstruction to solve the problems, such as that the prior art can not be repeated several times.The reservoir reconstruction method of the overlapping development horizontal well, comprising the following steps: determine that the operation scheme of controllable shock wave fracturing device, operation scheme include: job parameter, job position；Through wash well operations are carried out to horizontal well；Wellhead assembly, coiled tubing and its control pipeline are installed；Coiled tubing both ends are connect with the ground controller of controllable shock wave tool pipe string, controllable shock wave fracturing device respectively；Controllable shock wave fracturing device is pushed to most deep Reservoir Section to be rebuilt by position indicator；Shock wave operation is implemented to Reservoir Section to be rebuilt；Shock wave operation is carried out to next Reservoir Section to be rebuilt in a manner of returning on successively；After the operation for completing all Reservoir Sections, underground tool string is above mentioned, remove and recycles each tool.
Description
Technical field
The invention belongs to energy extraction fields, and in particular to a kind of reservoir reconstruction method of overlapping development horizontal well.
Background technique
The exploitation of petroleum resources is key pillars of the national economy, is related to national security, and cease with people's lives
Manner of breathing closes, although China's petroleum resources total amount is many, data quality is relatively poor, and development difficulty is larger, and recovery percent of reserves is very low.
In order to improve the recovery percent of reserves of petroleum resources, drainage area is increased with horizontal well drilling.
Currently, horizontal well has to pass through large-scale fracturing reform, it is just able to achieve economic development.With horizontal wells into
Enter the middle and later periods, yield is gradually reduced, and needs to carry out reservoir reconstruction again that industrial output can be obtained.Existing multiple fracturing technique needs
New seepage channel is created, but this method has the following to perforations adding is carried out between perforation cluster:
One, occupancy well site area in pressing crack construction scene is big, needs to take over the soil reclaimed for use again, increases cost, destroys local
Ecological environment；
Two, perforations adding need to use packer to be insulated, and the reservoir both ends to perforations adding are exactly the position of perforation cluster, therefore it is difficult to ensure that
The success rate insulated when perforations adding at this；
Three, refracturing when can duplicate number it is limited, and it is difficult to ensure that refracturing can generate new crack；
Four, existing multiple fracturing technique is at high cost, and effect is poor, so that fracturing reform cost performance is low.
Summary of the invention
The object of the present invention is to provide a kind of reservoir reconstruction methods of overlapping development horizontal well, can not to solve the prior art
The problem of implementing fracturing reform is repeated several times.
To achieve the above object, the technical solution of the invention is as follows:
A kind of reservoir reconstruction method of overlapping development horizontal well, is characterized in that and includes the following steps；
S1 collects the data of the data and Reservoir Section to be rebuilt to level of operation well；Controllable shock wave is determined according to the data
The operation scheme of fracturing device, the operation scheme include: the number of shocks of job parameter, job position and each position；
S2, installation wellhead assembly, coiled tubing and its control pipeline, and to its each component, each coupling part, by its nominal operation
Pressure carries out pressure testing, executes step S3 after pressure testing is qualified；
S3 carries out through wash well operations to horizontal well；
S4, assembles controllable shock wave tool pipe string, and controllable shock wave tool pipe string includes sequentially connected position indicator, active joint
With controllable shock wave fracturing device；
S5 connects at coiled tubing both ends with the ground controller of controllable shock wave tool pipe string, controllable shock wave fracturing device respectively
It connects, and discharge test is carried out to entire supplying system, execute step S6 after test passes；
S6, transfers controllable shock wave tool pipe by Operation Tubing Aggregate and seals in well, is caused controllable shock wave by the position indicator
It splits device and pushes to most deep Reservoir Section to be rebuilt；
S7, the ground controller charges to the energy-storage capacitor of controllable shock wave fracturing device, and controlling energy converter will be electric
It can be converted into mechanical energy, and then shock wave work is implemented to Reservoir Section to be rebuilt according to the operation scheme that step S1 is set
Industry；
S8 carries out shock wave operation to next Reservoir Section to be rebuilt in a manner of returning on successively；
S9 above mentions underground tool string after the operation for completing all Reservoir Sections, removes and recycles each tool.
Preferably, the wellhead assembly includes the well head set gradually from bottom to top, flange, lubricator crossover flange, prevents
Jet pipe, four ram preventers, blowout prevention box, injection head.
Preferably, controllable shock wave fracturing device is connect by the screw thread on active joint with position indicator.
Preferably, the shock strength that controllable shock wave fracturing device is loaded into reservoir need to be greater than the compression strength of rammell,
And it is less than the compression strength of wellbore casing.
Preferably, collecting to the data of operation well and the data of Reservoir Section to be rebuilt includes well data, casing programme number
According to, oil/gas show situation, formation testing data, reservoir properties and ensaying, ground stress characteristics and rock in well temperature hole deviation data, drilling
Stone mechanics parameter, intrinsic fracture development, well log interpretation data, perforation data etc..
Preferably, the job position of controllable shock wave fracturing device may be provided at the reservoir of perforation cluster, can also be provided at and penetrates
At reservoir between hole cluster and perforation cluster.
Preferably, controllable shock wave fracturing device can implement transformation twice or more than twice to the Reservoir Section to be rebuilt of setting
Operation.
The invention has the benefit that
1. the controllable shock wave fracturing device in the present invention directly can carry out impact fracturing to reservoir to be rebuilt, avoid using packing
Device is difficult to ensure the problem of sealing, and this method not only can impact transformation at the reservoir to perforation cluster, can also be in perforation cluster and perforation
Transformation is impacted at reservoir between cluster, and to when acting between perforation cluster and perforation cluster is not required to that reservoir perforations adding is realized and penetrated
Between the cluster of hole and the transformation fracturing of perforation cluster, while also reducing the improvement cost of horizontal well.
2. the present invention does not injure the casing and cement sheath of interlayer, multiplicating transformation can be carried out to reservoir, greatly improved
The complexity of Reservoir Fracture, and then improve the recovery ratio of petroleum resources.
Detailed description of the invention
Fig. 1 is the controllable shock wave fracturing device working state schematic representation of the embodiment of the present invention.
Appended drawing reference is as follows:
The controllable shock wave fracturing device of 1-, 2- active joint, 3- position indicator, 4- perforation cluster, 5- well head, 6- flange, 7- lubricator turn
Change flange, 8- lubricator, tetra- ram preventer of 9-, 10- blowout prevention box, 11- injection head.
Specific embodiment
The contents of the present invention are described in further detail below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, the reservoir reconstruction method of the overlapping development horizontal well, comprising the following steps:
S1 collects the data of the data and Reservoir Section to be rebuilt to operation well；Controllable shock wave fracturing is determined according to the data
The operation scheme of device 1, operation scheme include: the number of shocks of job parameter, job position and each position；
Collecting to the data of operation well and the data of Reservoir Section to be rebuilt includes that well data, casing programme data, well hot-well are oblique
Oil/gas show situation, formation testing data, reservoir properties and ensaying, ground stress characteristics and rock mechanics parameters in data, drilling,
Intrinsic fracture development, well log interpretation data, perforation data etc..
By the analysis of collection Reservoir Section status to be rebuilt, to further determine that the work of controllable shock wave fracturing device
Industry scheme, operation scheme include: job parameter (pressure that such as shock wave applies every time, action time, single momentum), operation
Position (may be provided at the reservoir of perforation cluster, can also be provided at the reservoir between perforation cluster and perforation cluster) and each position
The number of shocks (general each repeated impacts 10-20 times differ) set.
S2, installation wellhead assembly, coiled tubing and its control pipeline, and to its each component, each coupling part, it is specified by its
Operating pressure carries out pressure testing, executes step S3 after pressure testing is qualified；
As shown in Figure 1, wellhead assembly includes the well head 5, flange 6, lubricator crossover flange 7, blowout prevention set gradually from bottom to top
Pipe 8, four ram preventers 9, blowout prevention box 10, injection head 11.
After wellhead assembly, coiled tubing and its control pipeline are installed in place, and to its each component, each coupling part, press
Its rated operating pressure carries out pressure testing, it is ensured that wellhead assembly, coiled tubing can work normally.
S3 carries out through wash well operations to horizontal well；
Through wash well operations are carried out according to horizontal well through wash well operations specification.
S4, assembles controllable shock wave tool pipe string, and controllable shock wave tool pipe string includes sequentially connected position indicator 3, lives
Dynamic connector 2, controllable shock wave fracturing device 1；
As shown in Figure 1, controllable shock wave fracturing device 1 is connect by the screw thread on active joint 2 with position indicator 3, and then complete
The assembling of controllable shock wave tool pipe string；
Controllable shock wave fracturing device 1 is the fracturing device that can produce controllable shock wave, which can treat
The impact that Reservoir Section implements repetition, intensity controlled is transformed, and then completes the repetition transformation of reservoir；
Controllable shock wave fracturing device 1 can implement transformation operation twice or more than twice to the Reservoir Section to be rebuilt of setting.
Position indicator 3 plays the role of positioning, it can be ensured that the Reservoir Section of the every Secondary Shocks of controllable shock wave fracturing device 1 is the storage set
Interval.
S5 controls at coiled tubing both ends with the ground of controllable shock wave tool pipe string, controllable shock wave fracturing device 1 respectively
Device connection, and discharge test is carried out to entire supplying system, step S6 is executed after test passes；
Controllable shock wave underground tool string and coiled tubing one end pass through screw thread, the coiled tubing other end and controllable shock wave fracturing
The ground controller of device 1 connects, and carries out discharge test in face of entire supplying system on ground after being installed, determines controllable shock wave
The job parameter of fracturing device 1 can reach established standards.
S6 transfers controllable shock wave tool pipe by Operation Tubing Aggregate and seals in well, will controllably be impacted by the position indicator 3
Wave fracturing device 1 pushes to most deep Reservoir Section to be rebuilt；
Controllable shock wave downhole tool is transferred with Operation Tubing Aggregate and seals in well, and the initial running speed control of Operation Tubing Aggregate exists
Whether normal 5m/min when down toward 50m, observes continuous supplying system work, if normally, continuing tripping in, running speed is gradually
Improve to 10-15m/min, under fashionable held stationary.Into after inclination section, running speed is reduced to 5m/min, into after horizontal segment,
Running speed, but Maximum speed limit 10m/min are properly increased according to tripping in situation；Close observation refers to weight in entire decentralization process
Table stops tripping in when occurring abnormal immediately, and tripping in is further continued for after releasing extremely until reaching most deep to setting；
Controllable shock wave fracturing device 1 is pushed into most deep Reservoir Section to be rebuilt by the positioning of position indicator 3, by adjusting controllable
1 position of shock wave fracturing device is at the job position of distalmost end.
S7, the ground controller charges to the energy-storage capacitor of controllable shock wave fracturing device 1, and controls energy converter
Mechanical energy is converted electric energy to, and then Reservoir Section to be rebuilt is implemented to impact according to the shock wave operation scheme that step S1 is set
Wave operation；
The ground controller of controllable shock wave fracturing device 1 first rectifies power frequency supply, then the intermediate frequency power supply that inversion is 1kHz that boosts
High-voltage DC power supply is supplied, the ground controller simultaneously controls underground equipment；High-voltage DC power supply boosts rectification again,
It is charged with constant current mode to energy-storage capacitor；When energy-storage capacitor is charged to the operation threshold of energy controller, energy hole
The electric energy stored in capacitor is quickly passed to energy converter by device moment；Energy converter converts electric energy to mechanical energy
(shock wave energy), and then the impact time of controllable 1 job parameter of shock wave fracturing device and each Reservoir Section by setting
It is several that shock wave operation is carried out to Reservoir Section to be rebuilt；
The shock strength that controllable shock wave fracturing device 1 is loaded into reservoir need to be greater than the compression strength of reservoir, and be less than shaft sleeve
The compression strength of pipe.
The operation mode does not need the dead chick hole between perforation cluster and perforation cluster, does not need packer packing every job step yet.
S9 carries out shock wave operation to next Reservoir Section to be rebuilt in a manner of returning on successively；
After the shock wave operation for completing a upper Reservoir Section, controllable shock wave underground tool string is above mentioned, controllable shock wave fracturing device 1 is made
Positioned at adjacent Reservoir Section to be rebuilt, and carry out shock wave operation；
By it is same successively on return in a manner of shock wave operation is implemented to remaining Reservoir Section to be rebuilt.
S10 above mentions underground tool string after the operation for completing all Reservoir Sections, removes and recycles each tool.
After the operation for completing all Reservoir Sections, underground tool string is above mentioned, initial upward strain speed control is in 8m/min；Above mention
After 100m, speed control is within 10m/min；Operation needs at the uniform velocity steady during entirely above mentioning；As do not meet it is abnormal as far as possible not with
Meaning changes upward strain speed；
When controllable shock wave fracturing device 1 is above mentioned to well head 10m or so, wellhead assembly is dismantled, controllable shock wave is sling by crane
Controllable shock wave fracturing device 1 is removed controllable shock wave fracturing device 1 proposition well head by underground tool string at active joint 2,
And each tool is successively removed, it puts the tools away.
Join with Oil Field personnel, both sides complete construction after signature is approved on construction handover book.It is arranged according to construction,
Continue other construction operations.
The above description is only an embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, all to utilize the present invention
The transformation of equivalent method made by specification and accompanying drawing content, is applied directly or indirectly in other relevant technical fields, and wraps
It includes in scope of patent protection of the invention.
Claims (7)
1. a kind of reservoir reconstruction method of overlapping development horizontal well, it is characterised in that: include the following steps；
S1 collects the data of the data and Reservoir Section to be rebuilt to level of operation well；Controllable shock wave is determined according to the data
The operation scheme of fracturing device (1), the operation scheme include: the impact time of job parameter, job position and each position
Number；
S2, installation wellhead assembly, coiled tubing and its control pipeline, and to its each component, each coupling part, by its nominal operation
Pressure carries out pressure testing, executes step S3 after pressure testing is qualified；
S3 carries out through wash well operations to horizontal well；
S4, assembles controllable shock wave tool pipe string, and controllable shock wave tool pipe string includes sequentially connected position indicator (3), activity
Connector (2) and controllable shock wave fracturing device (1)；
S5, by the coiled tubing both ends ground controller with controllable shock wave tool pipe string, controllable shock wave fracturing device (1) respectively
Connection, and discharge test is carried out to entire supplying system, step S6 is executed after test passes；
S6 transfers controllable shock wave tool pipe by Operation Tubing Aggregate and seals in well, by the position indicator (3) by controllable shock wave
Fracturing device (1) pushes to most deep Reservoir Section to be rebuilt；
S7, the ground controller charge to the energy-storage capacitor of controllable shock wave fracturing device (1), and controlling energy converter will
Electric energy is converted into mechanical energy, and then implements shock wave work to Reservoir Section to be rebuilt according to the operation scheme that step S1 is set
Industry；
S8 carries out shock wave operation to next Reservoir Section to be rebuilt in a manner of returning on successively；
S9 above mentions underground tool string after the operation for completing all Reservoir Sections, removes and recycles each tool.
2. a kind of reservoir reconstruction method of overlapping development horizontal well according to claim 1, it is characterised in that: the well head
Device includes the well head (5) set gradually from bottom to top, flange (6), lubricator crossover flange (7), lubricator (8), four flashboards
Preventer (9), blowout prevention box (10), injection head (11).
3. a kind of reservoir reconstruction method of overlapping development horizontal well according to claim 2, it is characterised in that: controllable impact
Wave fracturing device (1) is connect by the screw thread on active joint (2) with position indicator (3).
4. a kind of reservoir reconstruction method of overlapping development horizontal well according to claim 3, it is characterised in that: controllable impact
The shock strength that wave fracturing device (1) is loaded into reservoir need to be greater than the compression strength of reservoir, and be less than the pressure resistance of wellbore casing
Degree.
5. a kind of reservoir reconstruction method of overlapping development horizontal well according to claim 4, it is characterised in that: collect wait make
The data of the data of industry well and Reservoir Section to be rebuilt includes well data, casing programme data, well temperature hole deviation data, oil in drilling
Gas shows situation, formation testing data, reservoir properties and ensaying, ground stress characteristics and rock mechanics parameters, intrinsic fracture development
And well log interpretation data, perforation data etc..
6. the reservoir reconstruction method of overlapping development horizontal well according to any one of claims 1 to 5, it is characterised in that: controllable
The job position of shock wave fracturing device (1) may be provided at the reservoir of perforation cluster, can also be provided between perforation cluster and perforation cluster
Reservoir at.
7. a kind of reservoir reconstruction method of overlapping development horizontal well according to claim 6, it is characterised in that: controllable impact
Wave fracturing device (1) can implement transformation operation twice or more than twice to the Reservoir Section to be rebuilt of setting.
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Cited By (2)
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| CN111173488A (en) * | 2020-03-16 | 2020-05-19 | 西安诚科石油工程技术服务有限公司 | Method for realizing production of gas well by using controllable shock wave |
| CN112855112A (en) * | 2019-11-28 | 2021-05-28 | 中国石油天然气股份有限公司 | Method for reconstructing interlayer of thick oil vertical well-horizontal well pattern |
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