CN211777365U - Rock expansion device of circulated construction liquid without fracturing stratum - Google Patents
Rock expansion device of circulated construction liquid without fracturing stratum Download PDFInfo
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- CN211777365U CN211777365U CN202020338497.9U CN202020338497U CN211777365U CN 211777365 U CN211777365 U CN 211777365U CN 202020338497 U CN202020338497 U CN 202020338497U CN 211777365 U CN211777365 U CN 211777365U
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Abstract
The utility model discloses a rock expansion device of recyclable construction liquid without fracturing stratum, which comprises a pressure control unit and a remote data acquisition control processor; the pressure control unit comprises a liquid storage tank for containing construction liquid, a high-pressure pump connected with the liquid storage tank, a liquid outlet of the high-pressure pump is connected with a main pipeline, a No. 1T-shaped tee joint, a No. 1 plug valve, a No. 1 flowmeter, a No. 2T-shaped tee joint, a No. 3T-shaped tee joint, a No. 4T-shaped tee joint, a No. 2 pressure gauge and a No. 2 plug valve are sequentially arranged on the main pipeline, and the tail end of the main pipeline is connected to a; the rest interface of the No. 3T-shaped tee joint is connected with a throttling pipeline, and the tail end of the throttling pipeline is connected to the liquid storage tank; no. 5T-shaped tee joints are installed on the pipelines between the No. 1 flowmeter and the No. 2T-shaped tee joints, and the remaining interfaces of the No. 5T-shaped tee joints are connected with the standby throttling pipelines. The utility model discloses the device passes through pressure control unit control, but realizes construction liquid cyclic utilization, increases rock porosity and permeability, realizes the rock dilatation.
Description
Technical Field
The utility model relates to an oil gas field production development technical field, especially a rock flash chamber of circulated construction liquid that need not fracturing stratum.
Background
At present, many oil fields at home and abroad enter the middle and late development stages, and the difficulty of increasing production and injection is increasing, so that a plurality of problems are faced. Such as the aspect of increasing production: the development mode of the heavy oil reservoir is thermal oil recovery generally, but because the viscosity of crude oil is higher, the conventional thermal oil recovery technology is difficult to effectively use, and the oil field meets the requirements of increasing and stabilizing the yield, and needs to be realized by expanding the production scale of the oil field, so that the contradiction of heavy oil steam huff and puff development is gradually exposed; for example, the typical problems of high steam injection pressure of a heavy oil steam huff-puff well, long preheating period of an SAGD well and the like seriously restrict the efficient development of heavy oil resources. Secondly, in the aspect of increasing injection: sandstone reservoirs with loose structures are often accompanied by plane heterogeneity, injection pressure of a water injection well is high, injection cannot be performed, oil well blocking yield is reduced, production cannot be performed, and the conventional acidizing fracturing production and injection increasing means has the conditions of poor effect, short effective period, large scale, easy formation of fractured water channeling and the like.
The technology of ground stress expansion, production increase and injection increase is an effective means for solving the problems. However, the domestic research on the conventional oil-water well capacity-expansion, yield-increase and injection-increase process beyond the heavy oil well is still in the initial stage, and the related theoretical research and practical application are relatively few. Therefore, the production and injection increasing device for the circulated non-fractured rock expansion is developed, the field construction process of rock expansion is finely controlled, injection and production parameters are optimized, pore seepage changes of an expansion area are analyzed in real time, and meanwhile, the cyclic utilization of construction liquid is of great practical significance for improving economic benefits and environmental protection.
Disclosure of Invention
The utility model aims at providing a need not the rock dilatation device of the circulated construction liquid in fracturing stratum.
The utility model provides a concrete structure of rock flash chamber device, including pressure control unit and distal end data acquisition control treater. The pressure control unit comprises a liquid storage tank for containing construction liquid, and the construction liquid contained in the liquid storage tank is oil-gas well wastewater. The liquid storage pot is connected with the high-pressure pump, and the main pipeline is connected to the liquid outlet of high-pressure pump, has set gradually No. 1T type tee bend, No. 1 plug valve, No. 1 flowmeter, No. 2T type tee bend, No. 3T type tee bend, No. 4T type tee bend, No. 2 pressure gauge, No. 2 plug valve on the main pipeline, and the end-to-end connection of main pipeline is to wellhead assembly. The main pipeline is a main channel used for sucking construction liquid from the liquid storage tank and pumping the construction liquid to a wellhead. No. 1 pressure gauge is installed to the surplus interface of No. 1T type tee bend, and the relief valve is installed to the surplus interface of No. 2T type tee bend, and No. 3T type tee bend's surplus interface connection throttle pipeline installs No. 3 plug valves, No. 2 flowmeter and No. 1 choke valve on the throttle pipeline in proper order, and throttle pipeline end-to-end connection is to the liquid storage pot. The throttling pipeline is a throttling channel used for controlling the flow of construction fluid entering the wellhead device. No. 1 pressure gauge and No. 2 pressure gauge are the pressure gauge that has wireless transmission data function. The No. 1 flowmeter and the No. 2 flowmeter are both flowmeters with wireless data transmission functions. No. 1 flowmeter, No. 2 flowmeter, No. 1 pressure gauge and No. 2 pressure gauge all with distal end data acquisition control processor wireless communication connection. The remote data acquisition control processor is used for acquiring construction hydraulic pressure and flow data, is connected with the wireless pressure gauge and the wireless flowmeter through a wireless network, optimizes key parameters such as construction pressure and discharge capacity according to the ground stress characteristics of an implementation area, and adjusts the pump injection parameters of the construction liquid on site.
Preferably, install No. 5T type tee joints on the pipeline between No. 1 flowmeter and No. 2T type tee joints, the reserve throttle pipeline of No. 5T type tee joint's surplus interface connection, install No. 4 plug valves and No. 2 choke valves on the reserve throttle pipeline in proper order, reserve throttle pipeline end is connected to the liquid storage pot. The backup choke line is a throttled backup passage for controlling the flow of the process fluid into the wellhead. The spare throttle pipeline is used as an emergency channel, and if the used throttle pipeline is disconnected and leaked, the throttle pipeline is closed, and the spare throttle pipeline is opened. If the main pipeline is split and leaked, the channel is closed, the throttling pipeline is opened to serve as an emergency channel, the well control safety is guaranteed, and if the throttling pipeline is also split and leaked, the standby throttling pipeline is opened to serve as an emergency channel, and the well control safety is guaranteed.
Compared with the prior art, the utility model discloses an useful part lies in:
the utility model discloses a need not the device of the circulated construction liquid in fracturing stratum and carry out dilatation output increase injection to the rock, the site operation is simple, need not move the tubular column, does not need large-scale operation team, need not increase new well completion measure and ground measure. The conventional hydraulic fracturing is not needed to be carried out on the rock, but the rock expansion is realized by adopting the pressure system control, which is the key for determining whether the rock expansion is successful, and the problems of water channeling, reservoir destruction and sand production, ineffective or unobvious yield increase and injection increase, short effective period and the like can be caused by improper pressure control. The construction process is controllable and monitored in real time, the size of the expansion area and the average permeability in the expansion area can be analyzed in real time in the expansion process, and excessive expansion or insufficient expansion is prevented. The production and injection increasing effective period is long, the construction liquid adopts oil and gas well wastewater, no chemical additive is additionally used, no toxic and harmful substance is discharged, the underground and oil well platforms are not polluted, the cyclic utilization in a pressure system is realized, and the method is suitable for popularization and use in the production and development of oil and gas fields.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1, the utility model discloses a connection structure schematic diagram of rock flash chamber device.
Figure 2, adopt the utility model discloses the device carries out the monitoring picture that obtains of concrete construction. In the figure, the upper curve is the inlet pressure curve and the lower curve is the pump displacement.
Reference numbers in the figures:
the high-pressure pump comprises a high-pressure pump 1, a liquid storage tank 2, a No. 1T-shaped tee joint 3, a No. 1 pressure gauge 4, a No. 1 plug valve 5, a No. 1 flow meter 6, a No. 5T-shaped tee joint 7, a No. 2T-shaped tee joint 8, a safety valve 9, a No. 3T-shaped tee joint 10, a No. 2 pressure gauge 11, a No. 4T-shaped tee joint 12, a No. 2 plug valve 13, a No. 3 plug valve 14, a No. 2 flow meter 15, a No. 1 throttle valve 16, a No. 4 plug valve 17, a No..
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in FIG. 1, the utility model provides a concrete structure of rock flash chamber, including pressure control unit and remote data acquisition control treater 19.
The pressure control unit comprises a liquid storage tank 2 for containing construction liquid, and the construction liquid contained in the liquid storage tank 2 is oil-gas well wastewater. Liquid storage pot 2 connects high-pressure pump 1, and the main pipeline is connected to the liquid outlet of high-pressure pump 1, has set gradually No. 1T type tee bend 3, No. 1 plug valve 5, No. 1 flowmeter 6, No. 2T type tee bend 8, No. 3T type tee bend 10, No. 4T type tee bend 12, No. 2 pressure gauge 11, No. 2 plug valve 13 on the main pipeline, and the end-to-end connection of main pipeline is to wellhead assembly. The main pipeline is a main channel used for sucking construction liquid from the liquid storage tank 2 and pumping the construction liquid to a wellhead. The high pressure pump 1 is used to inject high pressure liquid under pressure into the downhole perforation zone. The No. 1 plug valve 5 is used for controlling the flow rate of the pumped liquid and opening and closing a pumped liquid channel. The No. 2 plug valve 13 is used for controlling the flow of the pumped liquid and opening and closing the pumped liquid channel. The remaining interface of the T-shaped tee joint No. 13 is provided with a pressure gauge No. 1 4. And a safety valve 9 is arranged at the residual interface of the No. 2T-shaped tee joint 8. The safety valve 9 is used for protecting the safety of the small-sized micro-fracturing device system for rock dilatation, and after the pressure is higher than the safety pressure, the safety valve 9 is opened to discharge the redundant pressure of the medium. The residual interface of the No. 3T-shaped tee joint 10 is connected with a throttling pipeline, a No. 3 plug valve 14, a No. 2 flow meter 15 and a No. 1 throttling valve 16 are sequentially arranged on the throttling pipeline, and the tail end of the throttling pipeline is connected to the liquid storage tank 2. The throttle valve No. 1 16 is used to control the construction fluid entering the reservoir 2. The throttling pipeline is a throttling channel used for controlling the flow of construction fluid entering the wellhead device. No. 1 pressure gauge 4 and No. 2 pressure gauge 11 are the pressure gauge that has the wireless transmission data function. The No. 1 flow meter 6 and the No. 2 flow meter 15 are both flow meters with a wireless data transmission function.
The flowmeter No. 16, the flowmeter No. 2 15, the pressure gauge No. 14 and the pressure gauge No. 2 are in wireless communication connection with a remote data acquisition control processor 19. The No. 1 flowmeter is used for monitoring the fluid flow value of the main pipeline, displaying the fluid flow value and transmitting the fluid flow value to the remote data acquisition control processor 19. The No. 1 pressure gauge 4 is used for monitoring the pressure value of construction liquid pumped out by the high-pressure pump 1, displaying the pressure value and transmitting the pressure value to the remote data acquisition control processor 19. The No. 2 pressure gauge 11 is used for monitoring the pressure value of the construction liquid pumped into the wellhead, displaying the pressure value and transmitting the pressure value to the remote data acquisition control processor 19. The No. 1 flowmeter is used for monitoring the flow value of the fluid in the throttle pipe, displaying the flow value and transmitting the flow value to the remote data acquisition control processor 19. The remote data acquisition control processor 19 is used for acquiring construction hydraulic pressure and flow data, is connected with the wireless pressure gauge and the wireless flowmeter through a wireless network, optimizes key parameters such as construction pressure and discharge capacity according to the ground stress characteristics of an implementation area, and adjusts the pump injection parameters of the construction liquid on site.
Install No. 5T type tee bend 7 on the pipeline between No. 1 flowmeter and No. 2T type tee bend 8, the reserve throttle pipeline of No. 5T type tee bend 7's surplus interface connection, install No. 4 plug valves 17 and No. 2 choke valves 18 on the reserve throttle pipeline in proper order, reserve throttle pipeline end-to-end connection is to liquid storage pot 2. The backup choke line is a throttled backup passage for controlling the flow of the process fluid into the wellhead. The No. 4 plug valve is used for controlling the liquid flow entering the liquid storage tank 2 in a throttling mode in a standby mode and opening and closing a throttling liquid channel. The No. 2 throttle valve 18 is used for standby throttling of the construction liquid entering the liquid storage tank 2.
The operation method for carrying out rock expansion by adopting the rock expansion device of the recyclable construction fluid without fracturing the stratum comprises the following steps of:
(1) pressure testing stage of the pressure system: starting the high-pressure pump 2, the far-end data acquisition control processor 19, communicating the main pipeline, starting the No. 1 plug valves 5 and the No. 2 plug valves 13, closing the throttling pipeline and the standby throttling pipeline, and closing the No. 3 plug valves 14 and the No. 4 plug valves 17. Through pressure gauge 4 and flowmeter 6 No. 1, the pressure testing pressure and the flow data of monitoring main line ground stress dilatation preliminary treatment, convey pressure data to distal end data acquisition control treater 19 through wireless network, distal end data acquisition control treater 19 receives the feedback result, through ground stress preprocessing software, real-time adjustment and optimization construction parameters such as construction pressure and discharge capacity. After the pressure test is finished, the No. 3 plug valve 14 is opened, and the valve is closed after pressure relief. And the pressure test stage is mainly used for detecting and checking whether the tightness of each pipeline of the pressure control unit meets the subsequent construction requirements.
(2) A stress pretreatment stage: as shown in fig. 2 (in the figure, the pressure curve is on the top and the pump displacement curve is below the pressure curve). Starting the high-pressure pump 2, the far-end data acquisition control processor 19, communicating the main pipeline, starting the plug valves 5 and 13 of the No. 1 plug valve and the No. 2 plug valve, closing the throttling pipeline and the standby throttling pipeline, and closing the plug valves 14 and 17 of the No. 3 plug valve and the No. 4 plug valve. And injecting construction liquid into the underground test layer position with low displacement to perform ground stress expansion. The pressure gauge 3 and the flowmeter 6 of No. 1 are used for monitoring the pressure and flow data of the construction fluid injected into the well, the pressure data is transmitted to the 19-far-end data acquisition control processor 19 through a wireless network, the 19-far-end data acquisition control processor 19 receives the feedback result, the construction parameters such as construction pressure, discharge capacity and the like are adjusted and optimized in real time, the No. 3 plug valve 14 is opened for throttling and circulating control, monitoring the flow data of the main pipeline and the throttle pipeline through a No. 1 flow meter 6 on the main pipeline and a No. 2 flow meter 15 on the throttle pipeline, the pressure data is transmitted to the remote data acquisition control processor 19 through a wireless network, the remote data acquisition control processor 19 receives the feedback result, as shown in fig. 2, the pressure gradually rises and then slowly falls, and the construction displacement is stable, which indicates that the pollutants and the like in the near wellbore zone are cleaned. After the stress pretreatment stage is finished, the No. 3 plug valve 14 is opened, and the pressure is released and then closed.
(3) And in the hydraulic expansion stage, as shown in fig. 2, rock expansion is started, the high-pressure pump 2, the far-end data acquisition control processor 19 and the main pipeline are started, the 1 # plug valves 5 and the 2 # plug valves 13 are opened, the throttling pipeline and the standby throttling pipeline are closed, the 3 # plug valves 14 and the 4 # plug valves 17 are closed, and construction liquid is injected into the underground test layer. Through adjusting No. 3 plug valves 14, throttle and circulation control are carried out, through No. 1 flowmeter 6 on the main line and No. 2 flowmeter 15 on the throttle pipeline, monitor the flow data of main line and throttle pipeline, convey pressure data to distal end data acquisition control treater 19 through wireless network, distal end data acquisition control treater 19 receives the feedback result, the construction discharge capacity is stable, pressure stabilization, after pressure rises fast, steady voltage after the certain time, the pump stops, open No. 3 plug valves pressure release, close after the pressure release. And repeating the hydraulic expansion stage for multiple times. During testing, real-time pressure drop curve analysis is carried out on a sampling computer on the ground surface, and after hydraulic expansion is finished, the No. 3 plug valve 14 is closed after pressure relief.
(4) Hydraulic shock expansion stage: starting the high-pressure pump 2, the far-end data acquisition control processor 19, communicating the main pipeline, starting the plug valves 1 and 2, starting the plug valves 5 and 13, closing the throttling pipeline and the standby throttling pipeline, closing the plug valves 3 and 4, and injecting the construction liquid into the underground test layer. Monitoring the pressure and flow data of construction liquid injected into the underground through the No. 1 wireless pressure gauge 3 and the No. 1 wireless flowmeter 6, transmitting the pressure data to the remote data acquisition control processor 19 through a wireless network, receiving a feedback result by the remote data acquisition control processor 19, and adjusting and optimizing construction parameters such as construction pressure, discharge capacity and the like in real time; opening a plug valve 14 No. 3, throttling and circulating control are carried out, flow data of a main pipeline and a throttling pipeline are monitored through a flow meter 6 No. 1 on the main pipeline and a flow meter 15 No. 2 on the throttling pipeline, pressure data are transmitted to a far-end data acquisition control processor 19 through a wireless network, the far-end data acquisition control processor 19 receives a feedback result, construction curve analysis is carried out in real time according to the site, construction parameters are adjusted, construction liquid is repeatedly injected into the underground, the times are determined by a site engineer according to the test condition, hydraulic shock expansion is carried out on rocks, and expansion of an expansion area is achieved. After the hydraulic oscillation expansion is finished, the No. 3 plug valve 14 is closed after the pressure is released.
(5) A large-volume expansion stage: starting the high-pressure pump 2, the far-end data acquisition control processor 19, communicating the main pipeline, starting the plug valves 1 and 2, turning on the plug valves 5 and 13, turning off the throttle pipeline and the standby throttle pipeline, turning off the plug valves 3 and 3, and turning off the plug valves 16, and injecting the construction liquid into the underground test layer position with low discharge capacity. Through pressure gauge 3 and No. 1 flowmeter 6, monitoring injection borehole construction hydraulic pressure power and flow data, convey pressure data to distal end data acquisition control processor 19 through wireless network, distal end data acquisition control processor 19 receives the feedback result, open No. 3 plug valve 14, throttle and cycle control, through No. 1 flowmeter on the main line and No. 2 flowmeters on the throttle pipeline, monitor the flow data of main line and throttle pipeline, convey pressure data to distal end data acquisition control processor 19 through wireless network, distal end data acquisition control processor 19 receives the feedback result, realize the bulky dilatation to the dilatation district, the dilatation district has been expanded. After construction is finished, the No. 3 plug valve 14 is closed after pressure relief.
(6) And (5) stewing for several days to realize rock expansion.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (5)
1. A rock expansion device of a recyclable construction fluid without fracturing a stratum is characterized by comprising a pressure control unit and a remote data acquisition control processor; the pressure control unit comprises a liquid storage tank for containing construction liquid, a high-pressure pump connected with the liquid storage tank, a liquid outlet of the high-pressure pump is connected with a main pipeline, a No. 1T-shaped tee joint, a No. 1 plug valve, a No. 1 flowmeter, a No. 2T-shaped tee joint, a No. 3T-shaped tee joint, a No. 4T-shaped tee joint, a No. 2 pressure gauge and a No. 2 plug valve are sequentially arranged on the main pipeline, and the tail end of the main pipeline is connected to a wellhead device; the residual interface of the No. 1T-shaped tee joint is provided with a No. 1 pressure gauge, the residual interface of the No. 2T-shaped tee joint is provided with a safety valve, the residual interface of the No. 3T-shaped tee joint is connected with a throttling pipeline, a No. 3 plug valve, a No. 2 flow meter and a No. 1 throttling valve are sequentially arranged on the throttling pipeline, and the tail end of the throttling pipeline is connected to a liquid storage tank; no. 1 flowmeter, No. 2 flowmeter, No. 1 pressure gauge and No. 2 pressure gauge all with distal end data acquisition control processor wireless communication connection.
2. The rock expansion device of recyclable construction fluid without fracturing stratum as claimed in claim 1, wherein the pipeline between the No. 1 flowmeter and the No. 2T-shaped tee is provided with the No. 5T-shaped tee, the remaining interface of the No. 5T-shaped tee is connected with the spare throttling pipeline, the spare throttling pipeline is provided with the No. 4 plug valve and the No. 2 throttling valve in sequence, and the tail end of the spare throttling pipeline is connected to the liquid storage tank.
3. The apparatus of claim 2, wherein the construction fluid contained in the reservoir tank is oil and gas well wastewater.
4. The apparatus for rock expansion of recyclable construction fluid without fracturing a formation of claim 2, wherein the No. 1 flow meter and the No. 2 flow meter are both flow meters having a function of wireless data transmission.
5. The apparatus for expanding rock volume of recyclable construction fluid without fracturing a formation of claim 2, wherein the pressure gauge No. 1 and the pressure gauge No. 2 are both pressure gauges having a function of transmitting data wirelessly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020338497.9U CN211777365U (en) | 2020-03-18 | 2020-03-18 | Rock expansion device of circulated construction liquid without fracturing stratum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020338497.9U CN211777365U (en) | 2020-03-18 | 2020-03-18 | Rock expansion device of circulated construction liquid without fracturing stratum |
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| CN211777365U true CN211777365U (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458281A (en) * | 2021-01-05 | 2022-05-10 | 中海油能源发展股份有限公司 | Rock capacity-expansion deep acidification implementation method |
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2020
- 2020-03-18 CN CN202020338497.9U patent/CN211777365U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458281A (en) * | 2021-01-05 | 2022-05-10 | 中海油能源发展股份有限公司 | Rock capacity-expansion deep acidification implementation method |
| CN114458281B (en) * | 2021-01-05 | 2024-03-12 | 中海油能源发展股份有限公司 | Rock capacity-expanding deep acidification implementation method |
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