CN102423655B - Large-flow fracturing fluid preparation system and method - Google Patents
Large-flow fracturing fluid preparation system and method Download PDFInfo
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- CN102423655B CN102423655B CN 201110457842 CN201110457842A CN102423655B CN 102423655 B CN102423655 B CN 102423655B CN 201110457842 CN201110457842 CN 201110457842 CN 201110457842 A CN201110457842 A CN 201110457842A CN 102423655 B CN102423655 B CN 102423655B
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Abstract
The invention relates to the technical field of oil exploitation, in particular to a large-flow liquid preparation system and a large-flow liquid preparation method for fracturing fluid; the problems of small discharge capacity, more equipment, large occupied area, overlong preparation time for liquid preparation during fracturing construction and the like in the conventional fracturing liquid preparation method are solved, and the large-flow liquid preparation system and the liquid preparation method for the fracturing liquid, which have the advantages of large discharge capacity, rapidness, convenience and convenience in liquid preparation and stable equipment performance, are provided; the high-flow fracturing fluid preparation system comprises a base fluid preparation system, an auxiliary agent adding system and a power and control system, wherein the base fluid preparation system and the auxiliary agent adding and distributing system are connected with each other through an electric signal and a data signal, and are connected through a process connecting manifold. The system can adopt open and sealed skid-mounted structural layout and flexibly adapt to various field well site operating environments，The carrying is convenient, the structural layout is reasonable, and the operation performance is stable.
Description
Technical field
The present invention relates to technical field of petroleum extraction, is the large flow liquid mixing system of a kind of fracturing fluid and dosing method.
Background technology
Fracturing is well production increment, an important technique measure of water injection well stimulation, not only be widely used in the low-permeability oil gas reservoir, and in, also obtained good effect in the volume increase transformation of High permeability pool, fracturing is generally to utilize ground high-pressure pump group, by high-viscous liquid with in the discharge capacity Injection Well that substantially exceeds the formation absorption ability, suppressed high pressure in shaft bottom, when this pressure is greater than the crustal stress of Around A Borehole and formation rock tensile strength, near shaft bottom, bottom produces crack, continue to inject the load fluid with proppant, crack is extended forward and is filled out with proppant, after closing well, crack closure is on proppant, thereby form the sand packed fracture with certain physical dimension and conductance ability in stratum near shaft bottom, make well reach the technological measure of increasing yield and injection purpose, the principle of fracturing increasing yield and injection is mainly the seepage state that has reduced the filtrational resistance of fluid near stratum, shaft bottom and changed fluid, make original Radial Flow change into the one-way flow of oil reservoir and crack approximation and the one-way flow between crack and pit shaft, eliminated radially restriction loss, greatly reduce energy consumption, thereby Oil/gas Well output or water injection well injection rate can significantly improve, in addition, fracturing has the releasing ponding near injured oil-gas Layer shaft bottom.
Current unconventional oil and gas reservoir occurs in a large number in China, and low permeability reservoir hangs down hole, hypotonic, anisotropism is strong, reserves abundance is low, predispose to damage, and most Oil/gas Wells must be implemented the Hydro Fracturing Stimulation Treatment rear and see production capacity.Fracturing has become the important measures of hyposmosis, extra permeability oilfield exploitation volume increase, and its technology level has direct impact to the economic development of oil gas.Research and development massive hydraulic fracturing supporting technology, play an important role to improving site operation level and quality control ability.Aspect the large continuous mixed technology of flow, the large flow of the U.S.'s fracturing fluid skid-mounted type monomer discharge capacity that is mixed is larger, and the maximum pump discharge of domestic dosing equipment is only 4.5 m
3/ min.Existing fracturing technique normally prepares in advance fracturing fluid at make-up station before construction, adopts tank car to be transported to scene.Therefore formula is fixing, can't adjust according to field requirement in good time, and the dosing surplus is large, after construction, will remain the fracturing fluid pollution environment, and manpower and materials are with high costs.
Summary of the invention
An object of the present invention is as solving the large flow liquid mixing system of above-mentioned existing fracturing fluid and dosing method discharge capacity little, formula is fixing, can't adjust according to field requirement in good time, the problems such as the dosing surplus is large, after construction, will remain the fracturing fluid pollution environment, and manpower and materials are with high costs, provide a kind of with low cost, excellent performance, energy-conserving and environment-protective, the large flow liquid mixing system of flexible fracturing fluid and dosing method.
For achieving the above object, a technical scheme of the present invention provides a kind of fracturing fluid large flow liquid mixing system, comprise that base fluid compounding system, auxiliary agent add and outflow pipeline, power and control system, each system connects each other by the signal of telecommunication and data-signal, and described base fluid compounding system adds with auxiliary agent and outflow pipeline is connected the manifold connection by technique.
In described power and control system, comprise dynamical system and control system, described control system, be based on the real-time online control system of PLC, and described dynamical system is diesel generating set or batteries.
Described technique connects manifold and is comprised of pipeline or pipeline and valve.
The described signal of telecommunication transmits by power cable, and described data-signal connects by the Control on Communication circuit.
Described base fluid compounding system comprises viscous material automatic feeding device, Large Efficient solid-liquid mixer, quick viscosity increasing system, peripheral water pot, flow-control metering device; Described viscous material automatic feeding device is connected with the Large Efficient solid-liquid mixer by pipeline, and the Large Efficient solid-liquid mixer is connected with quick viscosity increasing system by pipeline; Peripheral water pot is connected the Large Efficient solid-liquid mixer by pipeline with the flow-control metering device.
Described Large Efficient solid-liquid mixer comprises jet pump, the pigment mixing arrangement, liquid-gas separation device, the tackify pump, described jet pump liquid feeding end is connected with the flow-control metering device by pipeline, outlet end is connected with the pigment mixing arrangement with valve by pipeline, the pigment mixing arrangement connects entrance point and is connected with viscous material automatic feeding device with jet pump, the port of export is connected with liquid-gas separation device, liquid-gas separation device is connected with the tackify pump by pipeline, and the tackify pump is connected with quick viscosity increasing system by pipeline.
Be provided with checkout gear in described quick viscosity increasing system, checkout gear is positioned at quick viscosity increasing system inwall.
Described through viscous material automatic feeding device interpolation supply thickening agent, through Large Efficient solid-liquid mixer, quick viscosity increasing system preparation base fluid;
Described auxiliary agent adds and outflow pipeline comprises auxiliary agent add-on system and outflow pipeline, described auxiliary agent add-on system comprises that auxiliary tank and auxiliary agent add metering system, described auxiliary agent adds metering system and is connected with power and control system with data-signal by the signal of telecommunication, and is connected with quick viscosity increasing system by pipeline; Described outflow pipeline comprises lotion pump and lotion pipeline, and the lotion pump is connected with power and control system with data-signal by the signal of telecommunication, and the lotion pump is connected with quick viscosity increasing system by pipeline on one side, and another side is connected with the lotion pipeline.
Described auxiliary agent add-on system can accurately add the required liquid adjuvants of various fracturing fluids by control system.
Described outflow pipeline, by the lotion pump, can be provided the fracturing fluid that meets the requirement of pressure break viscosity immediately, and its granting amount can reach 8m
3/ min.
Another technical scheme of the present invention provides the large flow dosing of a kind of fracturing fluid method, and the method step is as follows:
1. by needed fracturing fluid formula input power and control system, control system is controlled the base fluid compounding system and is started, viscous material automatic feeding device adds rubber powder according to the signal of receiving, by the Large Efficient solid-liquid mixer, the water in peripheral water pot and rubber powder is mixed, and forms base fluid;
2. base fluid is inputted quick viscosity increasing system, under the control of control system, carries out tackify;
3. the base fluid compounding system is the control metering device Real-time Collection inflow on the water supply process pipeline that forms of water pot and pipeline at home and abroad, thickening agent automatic precision charging gear gathers the rubber powder addition, feed back to control system by control circuit, control system is controlled respectively inflow or rubber powder addition after calculating by program;
4. fast in viscosity increasing system, be provided with checkout gear, add while requiring when viscosity reaches auxiliary agent, control system control that auxiliary agent adds and outflow pipeline in assistant feeding device, start to add auxiliary agent by the formula required amount;
5. auxiliary agent enters in quick viscosity increasing system by rational process pipeline, fast viscosity increasing system play the base fluid tackify play again the mixed uniformly effect of auxiliary agent now fast viscosity increasing system play base fluid and the mixed uniformly effect of auxiliary agent of making;
6. in quick viscosity increasing system, base fluid reaches and provides while requiring, and the instruction of the controlled system of lotion pump, carry out lotion work.
Described base fluid compounding system comprises viscous material automatic feeding device, Large Efficient solid-liquid mixer, quick viscosity increasing system; Described viscous material automatic feeding device is connected with the Large Efficient solid-liquid mixer by pipeline, and the Large Efficient solid-liquid mixer is connected with quick viscosity increasing system by pipeline.
Connecting described viscous material automatic feeding device is a kind of viscous material automatic feeding device, refer to the patent ZL200920246163.2 of our unit, add and supply with thickening agent through viscous material automatic feeding device, through Large Efficient solid-liquid mixer, quick viscosity increasing system preparation base fluid;
Described auxiliary agent adds and outflow pipeline comprises auxiliary agent add-on system and outflow pipeline, described auxiliary agent add-on system comprises that auxiliary tank and auxiliary agent add metering system, described auxiliary agent adds metering system and is connected with power and control system with data-signal by the signal of telecommunication, and is connected with quick viscosity increasing system by pipeline; Described outflow pipeline comprises lotion pump and lotion pipeline, and the lotion pump is connected with power and control system with data-signal by the signal of telecommunication, and the lotion pump is connected with quick viscosity increasing system by pipeline on one side, and another side is connected with the lotion pipeline.
Described auxiliary agent add-on system can accurately add the required liquid adjuvants of various fracturing fluids by control system.
Described outflow pipeline can immediately be provided and meet the fracturing fluid that the pressure break viscosity requires by the configuration of pump valve group, and its granting amount can reach 8m
3/ min.
Beneficial effect of the present invention is:
The patent ZL200920246163.2 that the present invention has used our unit to have viscous material automatic feeding device, thickening agent is supplied with in interpolation that can efficiently and accurately, through Large Efficient pigment mixing arrangement, viscosity increasing system fast, can the required base fluid of rapid preparing pressure break viscosity; The base fluid amount of preparation can reach 8m
3/ min.Can accurately add various fracturing fluid liquid adjuvants by control system.Can immediately provide the fracturing fluid that meets the requirement of pressure break viscosity, its granting amount can reach 8m
3/ min; Described dynamical system, can adapt to when mains supply can't be passed through in the pressure break scene in the wild, for whole system provides power, and can run well by Guarantee control system.Described control system, be based on the real-time online control system of PLC, and this control system is with touch-screen, and control system was accurately controlled boot sequence, the working time of each system in the dosing process, and duty is detected.Can automatically complete dosing according to field requirement, and substantially without raffinate.The described auxiliary agent add-on system of present technique can be according to field requirement, adjust at any time the addition of various auxiliary agents by control system, various auxiliary agents interpolations enter in quick viscosity increasing system in this technique, be conducive to like this auxiliary agent and evenly mix with base fluid, and meet Matrix viscosity and reach the technological requirement of after requirement, adding again auxiliary agent.
The described fracturing fluid delivery system of present technique adopts the lotion pump, by realizing that under the control of control system pump valve links to provide fracturing fluid, realize under the control of control system that the pump valve interlock can realize the large flow dosing of fracturing fluid technology, reaches fracturing fluid granting amount and reaches 8m
3the large flow dosing demand of/min.
The present invention is a kind of specially for the technology of the large flow dosing of fracturing fluid in fracturing in oil output technique, belongs to oil output technology field.The present invention can be good at meeting the on-the-spot fracturing fluid dosing of massive hydraulic fracturing demand, has filled up the blank of the large flow dosing of domestic fracturing fluid technology.
The accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation.
The specific embodiment
Further illustrate the present invention below in conjunction with embodiment, but not as a limitation of the invention.
Embodiment 1:
The present invention includes base fluid compounding system 1, auxiliary agent interpolation and outflow pipeline 2, power and control system 3; Each system connects each other for No. 5 by the signal of telecommunication and data letter, and described base fluid compounding system adds with auxiliary agent and outflow pipeline is connected manifold 6 connections by technique.
In described power and control system, dynamical system is diesel generating set 7; Described control system 8, be based on the real-time online control system of PLC, also comprises regulator cubicle 21, and regulator cubicle 21 is connected by the signal of telecommunication or data-signal with control system 8.
The described signal of telecommunication transmits by power cable, and described data-signal connects by the Control on Communication circuit.
Described base fluid compounding system 1 comprises viscous material automatic feeding device 9, Large Efficient solid-liquid mixer 10, quick viscosity increasing system 11, peripheral water pot 12, flow-control metering device 13; Described viscous material automatic feeding device 9 is connected with Large Efficient solid-liquid mixer 10 by pipeline, and Large Efficient solid-liquid mixer 10 is connected with quick viscosity increasing system 11 by pipeline; Peripheral water pot 12 is connected with flow-control metering device 13 by pipeline.
Described Large Efficient solid-liquid mixer 10 comprises jet pump 22, pigment mixing arrangement 23, liquid-gas separation device 24, tackify pump 25, described jet pump 22 connects liquid feeding end and is connected with flow-control metering device 13 by pipeline, outlet end is connected with pigment mixing arrangement 23 with valve by pipeline, pigment mixing arrangement 23 connects entrance point and is connected with viscous material automatic feeding device 9 with jet pump, the port of export is connected with liquid-gas separation device 24, liquid-gas separation device 24 is connected with tackify pump 25 by pipeline, and tackify pump 25 is connected with quick viscosity increasing system 11 by pipeline.
Described auxiliary agent adds and outflow pipeline 2 comprises auxiliary agent add-on system 15 and outflow pipeline 16, described auxiliary agent add-on system 15 comprises that auxiliary tank 17 and auxiliary agent add metering system 18, described auxiliary agent adds metering system 18 and is connected with power and control system 3 with data-signal by the signal of telecommunication, and is connected with quick viscosity increasing system by pipeline; Described outflow pipeline comprises lotion pump 19 and lotion pipeline 20, and the lotion pump is connected with power and control system 3 with data-signal by the signal of telecommunication, on one side the lotion pump passes through pipeline, with quick viscosity increasing system 11, is connected, and another side is connected with lotion pipeline 20.
Described auxiliary agent add-on system 15 can accurately add the required liquid adjuvants of various fracturing fluids by control system.
Described outflow pipeline 16 can immediately be provided and meet the fracturing fluid that the pressure break viscosity requires by the configuration of different pump valve groups, and its granting amount can reach 8m
3/ min.
The large flow dosing of fracturing fluid of the present invention technology, preferably specific embodiments is as shown in Figure 1 for it, power and control system are the bases of present technique, by power and control system, make on the one hand present technique can adapt to when mains supply can't be passed through in the pressure break scene in the wild, for whole system provides power, guarantee that whole system runs well; Make on the other hand the present technique automaticity high, be easy to control in real time the dosing process.The distinctive core of present technique is that base fluid configuration-system, auxiliary agent add and the large system of outflow pipeline two.In this two large system, by the reasonable Arrangement to process equipment, the reasonable connection of process pipeline and the combination of the reasonable selection of pump valve, can realize that fracturing fluid is now with the current, and the dosing amount reaches 8 m
3/ min.
At the pressure break scene, described each the large system reasonable Arrangement position of present technique as shown in Figure 1.When the dosing demand is arranged, at first start power and control system, determine the parameters such as dosing amount and rubber powder adding proportion; The base fluid configuration-system enters running status immediately, thickening agent automatic precision charging gear adds rubber powder according to the control signal received, by the Large Efficient mixing arrangement, pigment are mixed to form base fluid and enter quick viscosity increasing system, viscosity increasing system guarantees to realize the base fluid first in first out by the labyrinth type dividing plate fast, not only can guarantee the continuous preparation of base fluid, and can make the viscosity of base fluid realize discharging fully in the short time.The labyrinth type dividing plate is product of the prior art.Simultaneously, control metering device Real-time Collection inflow on the base fluid compounding system, thickening agent automatic precision charging gear gathers the rubber powder addition, feed back to control system by control circuit, control system is controlled respectively inflow or rubber powder addition after calculating by program, make the base fluid preparation can reach 8 m
3/ min and meet ratio requirement.Fast in viscosity increasing system, checkout gear is installed, adds while requiring when viscosity reaches auxiliary agent, control system control that auxiliary agent adds and outflow pipeline in assistant feeding device, start to add auxiliary agent by the formula required amount.Auxiliary agent enters in quick viscosity increasing system by rational process pipeline, and now viscosity increasing system plays base fluid and the mixed uniformly effect of auxiliary agent of making fast.In quick viscosity increasing system, base fluid reaches and provides while requiring, and the instruction of the controlled system of lotion pump, start lotion.Lotion is partly by the innovation layout of process pipeline pump valve, and the fracturing fluid maximum issue quantity reaches 8 m
3/ min, realized on-the-spot large flow dosing specification requirement.
Embodiment 2:
The method that the large flow liquid mixing system of described fracturing fluid is used, the method step is as follows:
1) by needed fracturing fluid formula input power and control system, control system is controlled the base fluid compounding system and is started, viscous material automatic feeding device adds rubber powder according to the signal of receiving, by the Large Efficient solid-liquid mixer, the water in peripheral water pot and rubber powder is mixed, and forms base fluid;
2) base fluid is inputted quick viscosity increasing system, under the control of control system, starts tack producing device, carries out tackify;
3) the control metering device Real-time Collection inflow on the base fluid compounding system, thickening agent automatic precision charging gear gathers the rubber powder addition, feed back to control system by control circuit, control system is controlled respectively inflow or rubber powder addition after calculating by program;
4) fast in viscosity increasing system, be provided with checkout gear, add while requiring when viscosity reaches auxiliary agent, control system control that auxiliary agent adds and outflow pipeline in assistant feeding device, start to add auxiliary agent by the formula required amount;
5) auxiliary agent enters in quick viscosity increasing system by rational process pipeline, and now viscosity increasing system plays base fluid and the mixed uniformly effect of auxiliary agent of making fast;
6) in quick viscosity increasing system, base fluid reaches and provides while requiring, and the instruction of the controlled system of lotion pump, carry out lotion work.
Claims (3)
1. the large flow liquid mixing system of fracturing fluid, it is characterized in that, comprise that base fluid compounding system, auxiliary agent add and outflow pipeline, power and control system, the signal of telecommunication and data-signal, technique connects manifold, and each system connects each other by the signal of telecommunication and data-signal, and described base fluid compounding system adds with auxiliary agent and outflow pipeline is connected the manifold connection by technique; Control system in described power and control system, be based on the real-time online control system of PLC; The described signal of telecommunication transmits by power cable, and described data-signal connects by the Control on Communication circuit; Described base fluid compounding system comprises viscous material automatic feeding device, Large Efficient solid-liquid mixer, quick viscosity increasing system, peripheral water pot, flow-control metering device; Described viscous material automatic feeding device is connected with the Large Efficient solid-liquid mixer by pipeline, and the Large Efficient solid-liquid mixer is connected with quick viscosity increasing system by pipeline; Peripheral water pot is connected the Large Efficient solid-liquid mixer by pipeline with the flow-control metering device; Be provided with checkout gear in described quick viscosity increasing system; Described Large Efficient solid-liquid mixer comprises jet pump, the pigment mixing arrangement, liquid-gas separation device, the tackify pump, described jet pump liquid feeding end is connected with the flow-control metering device by pipeline, outlet end is connected with the pigment mixing arrangement with valve by pipeline, the pigment mixing arrangement connects entrance point and is connected with viscous material automatic feeding device with jet pump, the port of export is connected with liquid-gas separation device, liquid-gas separation device is connected with the tackify pump by pipeline, and the tackify pump is connected with quick viscosity increasing system by pipeline.
2. the large flow liquid mixing system of fracturing fluid according to claim 1, it is characterized in that, described auxiliary agent adds and outflow pipeline comprises auxiliary agent add-on system and outflow pipeline, described auxiliary agent add-on system comprises that auxiliary tank and auxiliary agent add metering system, described auxiliary agent adds metering system and is connected with power and control system with data-signal by the signal of telecommunication, and is connected with quick viscosity increasing system by pipeline; Described outflow pipeline comprises lotion pump and lotion pipeline, and the lotion pump is connected with power and control system with data-signal by the signal of telecommunication, and the lotion pump is connected with quick viscosity increasing system by pipeline on one side, and another side is connected with the lotion pipeline.
3. the method that the large flow liquid mixing system of fracturing fluid is used according to claim 1, is characterized in that, the method step is as follows:
1) by needed fracturing fluid formula input power and control system, control system is controlled the base fluid compounding system and is started, viscous material automatic feeding device adds rubber powder according to the signal of receiving, by the Large Efficient solid-liquid mixer, the water in peripheral water pot and rubber powder is mixed, and forms base fluid;
2) base fluid is inputted quick viscosity increasing system, under the control of control system, starts tack producing device, carries out tackify;
3) the control metering device Real-time Collection inflow on the base fluid compounding system, thickening agent automatic precision charging gear gathers the rubber powder addition, feed back to control system by control circuit, control system is controlled respectively inflow or rubber powder addition after calculating by program;
4) fast in viscosity increasing system, be provided with checkout gear, add while requiring when viscosity reaches auxiliary agent, control system control that auxiliary agent adds and outflow pipeline in assistant feeding device, start to add auxiliary agent by the formula required amount;
5) auxiliary agent enters in quick viscosity increasing system by rational process pipeline, and now viscosity increasing system plays base fluid and the mixed uniformly effect of auxiliary agent of making fast;
6) in quick viscosity increasing system, base fluid reaches and provides while requiring, and the instruction of the controlled system of lotion pump, carry out lotion work.
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| FR2990233B1 (en) * | 2012-05-04 | 2014-05-09 | Snf Holding Company | IMPROVED POLYMER DISSOLUTION EQUIPMENT SUITABLE FOR IMPORTANT FRACTURING OPERATIONS |
| FR2994706B1 (en) * | 2012-08-27 | 2014-08-22 | Spcm Sa | ADDITIVE PREPARATION CENTER FOR HYDRAULIC FRACTURING OPERATIONS AND HYDRAULIC FRACTURING METHOD USING THE PREPARATION CENTER |
| CN103977734B (en) * | 2013-02-07 | 2016-02-10 | 汤树林 | Based on solid and liquid blending device and its implementation of Oil/gas Well |
| CN103623735B (en) * | 2013-11-14 | 2015-06-17 | 中国海洋石油总公司 | Seaborne continuous blending device for fracturing fluid |
| CN103726821B (en) * | 2014-01-08 | 2016-08-17 | 北京神州卓越石油科技有限公司 | Acidizing and fracturing fluid continuous mixture feeder |
| CN103721619B (en) * | 2014-01-08 | 2016-01-13 | 北京神州卓越石油科技有限公司 | A kind of fracturing fluid continuous mixing device |
| CN105080412B (en) * | 2014-05-22 | 2018-04-17 | 北京神州卓越石油科技有限公司 | The automatic continuous blending device of fracturing fluid |
| CN105126697B (en) * | 2015-08-25 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | The continuous liquid mixing system of fracturing fluid big flow of hydraulic fracturing and its with liquid technique |
| CN106215795B (en) * | 2016-09-18 | 2019-02-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of prewired formula fiber dispersal device and method and application |
| CN109796956B (en) * | 2018-12-27 | 2021-05-07 | 四机赛瓦石油钻采设备有限公司 | Electric-drive continuous fracturing fluid blending sledge |
| US11955782B1 (en) | 2022-11-01 | 2024-04-09 | Typhon Technology Solutions (U.S.), Llc | System and method for fracturing of underground formations using electric grid power |
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