CN103696745B - Oil-gas reservoir horizontal well dynamic analog multifunction experiment apparatus - Google Patents
Oil-gas reservoir horizontal well dynamic analog multifunction experiment apparatus Download PDFInfo
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Abstract
The invention discloses oil-gas reservoir horizontal well dynamic analog multifunction experiment apparatus, it comprises storage tank A(1), pit shaft (2) and storage tank B(3), pit shaft (2) is divided into multiple large section by the pressure-reducing valve (4) of pit shaft (2), the sealing of pit shaft (2) one end, the other end connects storage tank A(1 by pipeline); The sidewall of pit shaft (2) is connected with multiple pipelines (8), the end of pipeline (8) connects storage tank B(3 by supervisor (9)), on each pipeline (8), be all connected with a core holding unit (10), connect pit shaft (2) and storage tank A(1) pipeline and be connected supervisor (9) and storage tank B(3) pipeline in have at least on a pipeline pump be installed. The invention has the beneficial effects as follows: can evaluate and be familiar with the impact of gas reservoir characterisitic parameter on horizontal productivity and the implementation result of operation measure, for horizontal well completion optimization and operation measure are implemented to provide technical basis, improve the standard well exploitation effect and oil field whole development benefit.
Description
Technical field
The present invention relates to oil development production technical field, particularly oil-gas reservoir horizontal well dynamic analog Multi-function experimental dressPut.
Background technology
Horizontal productivity analysis is the basis that horizontal well technology obtains economic benefit, is also horizontal well optimal design, formulationThe important evidence of reasonable development scheme, exploitation dynamic analysis and adjustment. The factor that affects horizontal productivity is a lot, has the non-of reservoirHomogenieity, fracture intensity, whether containing limit/end water etc.
At present both at home and abroad the computational methods of horizontal productivity have a lot, but do not have a set of complete experimental provision evaluate withThe understanding impact of different affecting factors on Horizontal Wells For Gas Reservoirs production capacity and the implementation result of operation measure. As Chinese patentPhysical analog test apparatus under the disclosed a kind of Horizontal Well of CN102704923, its only can simulated formation in fluid seepage flow andFluid in the net horizontal section pit shaft operating mode combining that circulates; And the disclosed a kind of dummy level of Chinese patent CN103195417Experimental provision and the experimental technique of well current limliting staged fracturing, its only can base area under reservoir distribution situation carry out horizontal well current limlitingStaged fracturing simulation.
Therefore develop a set of physical simulation experiment device, in order to the Study of the Realization reservoir characteristics, as permeability and distribution, beWater etc. at the bottom of no growth crack, limit, (fluid injection/gas injection/product cuts open equilibrium and segmentation is opened for the impact on horizontal productivity and operation measureAdopt) effect assessment is very necessary. By PHYSICAL MODELING OF IN, understand fully that horizontal productivity affects rule dynamically and operation is arrangedThe actual effect of executing, for horizontal well completion optimization and operation measure provide technical basis, thereby improves the standard well exploitation effect greatlyFruit and oil field whole development benefit.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide one can understand fully the dynamic shadow of horizontal productivityRing the actual effect of rule and operation measure, the improve the standard oil-gas reservoir water of well exploitation effect and oil field whole development benefit greatlyHorizontal well dynamic analog multifunction experiment apparatus.
Object of the present invention is achieved through the following technical solutions: oil-gas reservoir horizontal well dynamic analog Multi-function experimental dressPut, it comprises storage tank A, pit shaft and storage tank B, and on pit shaft, interval is provided with multiple pressure-reducing valves, and described multiple pressure-reducing valves are by pit shaftBe divided into multiple large section, a flowmeter A and pressure sensor A be all installed on each large section, described pit shaft one end sealing,The other end of pit shaft is provided with liquid in-out pipe, and liquid in-out pipe connects storage tank A by pipeline; The sidewall of pit shaft is connected with multiple pipesLine, the end of pipeline connects supervisor, and supervisor connects storage tank B, is all connected with a core holding unit, rock on described each pipelineA port of heart clamp holder connects pit shaft by pipeline, and another port of core holding unit connects supervisor, rock by pipelineThe confined pressure pipe of heart clamp holder connects pressurized cylinder, and valve A and pressure sensor B are installed on the escape pipe of pressurized cylinder, connectsOn the pipeline of core holding unit and pit shaft, be provided with pressure sensor C and flowmeter B, connect core holding unit and supervisor's pipelineOn be provided with pressure sensor D; Connect the pipeline of pit shaft and storage tank A and is connected be responsible for and the pipeline of storage tank B in have one at leastPump is installed on pipeline.
The liquid in-out pipe of described pit shaft connects storage tank A by two arms simultaneously, the arm A in two described armsOn pump A is installed, the feed tube of pump A connects storage tank A, the drain pipe of pump A connects pit shaft, and valve B is installed, institute on drain pipeThe direction of the upper edge of another arm B of stating from storage tank A to pit shaft is provided with safety valve A, needle valve A and valve C successively; Connect mainOn the pipeline of pipe and storage tank B, edge is provided with needle valve B and valve D from storage tank B successively to supervisor's direction.
The one end that connects storage tank A taking pit shaft is as front end, and pit shaft is provided with two pressure-reducing valves along vertical direction interval,Pit shaft is divided into leading portion, stage casing and three large sections of back segment by two described pressure-reducing valves, on the sidewall in leading portion and stage casing, is all connectedThere are two pipelines, on the sidewall of back segment, are connected with three pipelines.
An intermediate receptacle is also all installed on described pipeline, and intermediate receptacle is arranged at and connects core holding unit and supervisorPipeline on, described intermediate receptacle inside is provided with the work that the inner chamber of intermediate receptacle is divided into two separate cavitysPlug, on intermediate receptacle, two are provided with and connect respectively two independently inlet/outlet pipes of cavity, in two inlet/outlet pipes of intermediate receptacleInlet/outlet pipe A connect core holding unit, another inlet/outlet pipe B of intermediate receptacle connects supervisor, inlet/outlet pipe A and inlet/outlet pipe B are all upperA valve E is installed, and pressure sensor D is arranged on the pipeline that connects intermediate receptacle and core holding unit.
The liquid in-out pipe of described pit shaft connects storage tank A by two arms simultaneously, the arm A in two described armsOn pump A is installed, the feed tube of pump A connects storage tank A, the drain pipe of pump A connects pit shaft, and valve B is installed, institute on drain pipeThe direction of the upper edge of another arm B of stating from storage tank A to pit shaft is provided with safety valve A and valve C successively; Described supervisor passes throughTwo arms connect storage tank B simultaneously, and the arm C in two described arms is upper along installing successively to supervisor's direction from storage tank BThere are needle valve B and valve D, on described another arm D, safety valve B are installed.
On the pipeline of described connection storage tank A and pit shaft, along the direction from storage tank A to pit shaft, safety valve A, pin are installed successivelyShape valve A and valve C; Described supervisor connects storage tank B by two arms simultaneously, the upper peace of arm C in two described armsPump B is housed, and the feed tube of pump B connects storage tank B, and the drain pipe of pump B connects supervisor, and valve F is installed on drain pipe, describedOn another arm D, safety valve B is installed.
On the pipeline of connection intermediate receptacle and core holding unit, be provided with control valve and pressure sensor, connect rock core clampingOn the pipeline of device and pressurized cylinder, be provided with control valve and pressure sensor.
The present invention has the following advantages: the present invention can evaluate and be familiar with the impact of gas reservoir characterisitic parameter on horizontal productivityWith the implementation result of operation measure, can understand fully that horizontal productivity affects the actual effect of rule and operation measure dynamically, forHorizontal well completion optimization and operation measure are implemented to provide technical basis, thereby greatly improve the standard well exploitation effect and oil field entiretyDevelopment benefit. The present invention can also predict the fluid injection section of water injection well, and the displacement efficiency of research water drive oil, for optimizing water injection technologyFoundation is provided; Acid solution spontaneous shunting situation of carrying out in pit shaft when the present invention can study shunting acid filling, and evaluate shunting acidChange effect, provide foundation for optimizing acidification technique.
The present invention can Researching Oil-gas production profile influence factor, its research direction can be divided into following some:
1. analyze the contribution to production capacity of the differential impact on horizontal well production fluid of in-place permeability and each section of oil reservoir.
2. the limited water conservancy diversion of research level well section and the infinite fluid diversion difference on liquid-producing capacity impact.
3. the present invention can study the relation of production profile and fluid nature, and fluid is water, oil or profit two-phaseThe difference of production profile and analyzing influence factor when stream, but be not limited to above two kinds of fluids.
4. the present invention can prediction level well production profile, and water ridge position and form and bottom-water breakthrough time, for finding out waterBreak through position, the field conduct of adjusting production profile and the measure of control water provides foundation.
5. because the pit shaft length of different Oil/gas Wells is inconsistent, pit shaft of the present invention can be flexibly according to large section of Operating condition adjustmentNumber and little hop count, easy to adjust, applied widely.
Brief description of the drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is another kind of structural representation of the present invention
Fig. 3 is the third structural representation of the present invention
In figure, 1-storage tank A, 2-pit shaft, 3-storage tank B, 4-pressure-reducing valve, 5-flowmeter A, 6-pressure sensor A, 7-liquid in-outPipe, 8-pipeline, 9-supervisor, 10-core holding unit, 11-pressurized cylinder, 12-valve A, 13-pressure sensor B, 14-pressure passesSensor C, 15-flowmeter B, 16-pressure sensor D, 17-pump A, 18-valve B, 19-safety valve A, 20-needle valve A, 21-valveC, 22-needle valve B, 23-valve D, 24-intermediate receptacle, 25-piston, 26-inlet/outlet pipe A, 27-inlet/outlet pipe B, 28-valve E, 29-Safety valve B, 30-pump B, 31-valve F.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described, protection scope of the present invention be not limited toDescribed in lower:
Embodiment 1:
Embodiment is the explanation to reservoir characteristics research. As shown in Figure 1, the multi-functional reality of oil-gas reservoir horizontal well dynamic analogExperiment device, it comprises storage tank A1, pit shaft 2 and storage tank B3, according to pit shaft 2 length interval on pit shaft 2, multiple pressure-reducing valves is installed4, pit shaft 2 is carried out to equitable subsection, pit shaft 2 is divided into multiple large section by described multiple pressure-reducing valves 4, all installs on each large sectionThere are a flowmeter A5 and pressure sensor A6, described pit shaft 2 one end sealings, the other end of pit shaft 2 is provided with liquid in-out pipe7, liquid in-out pipe 7 connects storage tank A1 by pipeline; The sidewall of pit shaft 2 is connected with multiple pipelines 8, according to the actual feelings of each large sectionCondition is determined experiment rock core number, finally determines test test line 8 numbers according to rock core number, and the end of pipeline 8 connectsSupervisor 9, supervisor 9 connects storage tank B3, is all connected with a core holding unit 10, core holding unit 10 on described each pipeline 8A port connect pit shaft 2 by pipeline, another port of core holding unit 10 connects supervisor 9, rock core folder by pipelineThe confined pressure pipe of holding device 10 connects pressurized cylinder 11, and valve A12 and pressure sensor are installed on the escape pipe of pressurized cylinder 11B13, is provided with pressure sensor C14 and flowmeter B15 on the pipeline of connection core holding unit 10 and pit shaft 2, connects rock core folderHold on device 10 and supervisor's 9 pipeline and be provided with pressure sensor D16; Connect the pipeline of pit shaft 2 and storage tank A1 and is connected be responsible for 9 andIn the pipeline of storage tank B3, have at least on a pipeline pump is installed.
The one end that connects storage tank A1 taking pit shaft 2 is front end, and pit shaft 2 is provided with two decompressions along vertical direction intervalValve 4, pit shaft 2 is divided into leading portion, stage casing and three large sections of back segment by two described pressure-reducing valves 4, on the sidewall in leading portion and stage casingAll be connected with two pipelines 8, on the sidewall of back segment, be connected with three pipelines 8.
An intermediate receptacle 24 is also all installed on described pipeline 8, and intermediate receptacle 24 is arranged at connection core holding unit10 and supervisor's pipeline of 9 on, described intermediate receptacle 24 inside are provided with the inner chamber of intermediate receptacle 24 are divided into two mutuallyThe independently piston 25 of cavity, on intermediate receptacle 24, two are provided with and connect respectively two independently inlet/outlet pipes of cavity, centreInlet/outlet pipe A26 in two inlet/outlet pipes of container 24 connects core holding unit 10, and another inlet/outlet pipe B27 of intermediate receptacle 24 connectsMeet supervisor 9, a valve E28 is all installed on inlet/outlet pipe A26 and inlet/outlet pipe B27, in the middle of pressure sensor D16 is arranged at and connectsOn the pipeline of container 24 and core holding unit 10.
On the pipeline of described connection storage tank A1 and pit shaft 2, along the direction from storage tank A1 to pit shaft 2, safety valve is installed successivelyA19, needle valve A20 and valve C21; Described supervisor 9 connects storage tank B3 by two arms simultaneously, in two described armsArm C on pump B30 is installed, the feed tube of pump B30 connects storage tank B3, the drain pipe of pump B30 connects supervisor 9, and drain pipeOn valve F31 is installed, on described another arm D, safety valve B29 is installed.
Described storage tank is fluid reservoir, waste liquid tank or gas tank.
When experiment, intermediate receptacle 24 is connected in the cavity of core holding unit 10 and fill reservoir fluid, pack rock core into rockIn heart clamp holder 10, according to fluid, mobile frictional resistance pressure drop in pit shaft 2 regulates pressure-reducing valve 4, opens valve F31, all valveDoor E28 and valve A12, regulate needle valve A20, controls and flow out fluid flow in pipeline, and valve-off C21, starts pump B30, pumpB30 is constant flow pump, and the fluid constant speed in storage tank B3 is pumped into intermediate receptacle 24, and the piston 25 promoting in intermediate receptacle 24 upwards movesMoving, reservoir fluid is entered in test pipeline, described storage tank B3 is fluid reservoir, opens valve in the time being full of liquid in pit shaft 2 againDoor C21, and open valve A12, add confined pressure to rock core, after flow speed stability, use pressure sensor A6, pressure sensor B13,The image data of pressure sensor C14, pressure sensor D16 and flowmeter A5, flowmeter B15, flowmeter C. According to rock coreThe flow dynamics that the distribution of permeability and flowmeter collect, analyzes the impact of permeability grade on production profile. By pit shaft 2Remove, from core holding unit 10, pipeline is out directly connected to valve C21, is horizontal well infinite fluid diversion, i.e. horizontal segmentThe impact that core permeability along journey during without pressure drop distributes on production profile.
Embodiment 2:
The present embodiment is the explanation to production profile prediction. As shown in Figure 1, the multi-functional reality of oil-gas reservoir horizontal well dynamic analogExperiment device, it comprises storage tank A1, pit shaft 2 and storage tank B3, is distributed in interval on pit shaft 2 multiple subtracting is installed according to reservoir permeabilityPressure valve 4, carries out segmentation to horizontal well pit shaft 2, and pit shaft 2 is divided into multiple large section by described multiple pressure-reducing valves 4, on each large sectionA flowmeter A5 and pressure sensor A6 are all installed, the 2 one end sealings of described pit shaft, the other end of pit shaft 2 be provided with intoDrain pipe 7, liquid in-out pipe 7 connects storage tank A1 by pipeline; The sidewall of pit shaft 2 is connected with multiple pipelines 8, according to every section of actual feelingsCondition is determined experiment rock core number, finally determines test test line 8 numbers according to rock core number, and the end of pipeline 8 connectsSupervisor 9, supervisor 9 connects storage tank B3, is all connected with a core holding unit 10, core holding unit 10 on described each pipeline 8A port connect pit shaft 2 by pipeline, another port of core holding unit 10 connects supervisor 9, rock core folder by pipelineThe confined pressure pipe of holding device 10 connects pressurized cylinder 11, and valve A12 and pressure sensor are installed on the escape pipe of pressurized cylinder 11B13, is provided with pressure sensor C14 and flowmeter B15 on the pipeline of connection core holding unit 10 and pit shaft 2, connects rock core folderHold on device 10 and supervisor's 9 pipeline and be provided with pressure sensor D16; Connect the pipeline of pit shaft 2 and storage tank A1 and is connected be responsible for 9 andIn the pipeline of storage tank B3, have at least on a pipeline pump is installed.
The one end that connects storage tank A1 taking pit shaft 2 is front end, and pit shaft 2 is provided with two decompressions along vertical direction intervalValve 4, pit shaft 2 is divided into leading portion, stage casing and three large sections of back segment by two described pressure-reducing valves 4, on the sidewall in leading portion and stage casingAll be connected with two pipelines 8, on the sidewall of back segment, be connected with three pipelines 8.
An intermediate receptacle 24 is also all installed on described pipeline 8, and intermediate receptacle 24 is arranged at connection core holding unit10 and supervisor's pipeline of 9 on, described intermediate receptacle 24 inside are provided with the inner chamber of intermediate receptacle 24 are divided into two mutuallyThe independently piston 25 of cavity, on intermediate receptacle 24, two are provided with and connect respectively two independently inlet/outlet pipes of cavity, centreInlet/outlet pipe A26 in two inlet/outlet pipes of container 24 connects core holding unit 10, and another inlet/outlet pipe B27 of intermediate receptacle 24 connectsMeet supervisor 9, a valve E28 is all installed on inlet/outlet pipe A26 and inlet/outlet pipe B27, in the middle of pressure sensor D16 is arranged at and connectsOn the pipeline of container 24 and core holding unit 10.
On the pipeline of described connection storage tank A1 and pit shaft 2, along the direction from storage tank A1 to pit shaft 2, safety valve is installed successivelyA19, needle valve A20 and valve C21; Described supervisor 9 connects storage tank B3 by two arms simultaneously, in two described armsArm C on pump B30 is installed, the feed tube of pump B30 connects storage tank B3, the drain pipe of pump B30 connects supervisor 9, and drain pipeOn valve F31 is installed, on described another arm D, safety valve B29 is installed.
Described storage tank is fluid reservoir, waste liquid tank or gas tank.
When experiment, intermediate receptacle 24 is connected in the cavity of core holding unit 10 and fill reservoir fluid, pack rock core into rockIn heart clamp holder 10, according to fluid, mobile frictional resistance pressure drop in pit shaft 2 regulates pressure-reducing valve 4, opens valve F31, all valveDoor E28 and valve A12, regulate needle valve A20, controls and flow out fluid flow in pipeline, and valve-off C21, starts pump B30, pumpB30 is constant flow pump, and the fluid constant speed in storage tank B3 is pumped into intermediate receptacle 24, and the piston 25 promoting in intermediate receptacle 24 upwards movesMoving, reservoir fluid is entered in test pipeline, described storage tank B3 is fluid reservoir, opens valve in the time being full of liquid in pit shaft 2 againDoor C21, and open valve A12, add confined pressure to rock core, after flow speed stability, use pressure sensor A6, pressure sensor B13,The image data of pressure sensor C14, pressure sensor D16 and flowmeter A5, flowmeter B15, flowmeter C. By to dataProcessing can be similar to and obtain production profile.
Embodiment 3:
The present embodiment is the explanation to the prediction of fluid injection section. As shown in Figure 2, the multi-functional reality of oil-gas reservoir horizontal well dynamic analogExperiment device, it comprises storage tank A1, pit shaft 2 and storage tank B3, is distributed in interval on pit shaft 2 multiple subtracting is installed according to reservoir permeabilityPressure valve 4, carries out segmentation to horizontal well pit shaft 2, and pit shaft 2 is divided into multiple large section by described multiple pressure-reducing valves 4, on each large sectionA flowmeter A5 and pressure sensor A6 are all installed, the 2 one end sealings of described pit shaft, the other end of pit shaft 2 be provided with intoDrain pipe 7, liquid in-out pipe 7 connects storage tank A1 by pipeline; The sidewall of pit shaft 2 is connected with multiple pipelines 8, according to every section of actual feelingsCondition is determined experiment rock core number, finally determines test test line 8 numbers according to rock core number, and the end of pipeline 8 connectsSupervisor 9, supervisor 9 connects storage tank B3, is all connected with a core holding unit 10, core holding unit 10 on described each pipeline 8A port connect pit shaft 2 by pipeline, another port of core holding unit 10 connects supervisor 9, rock core folder by pipelineThe confined pressure pipe of holding device 10 connects pressurized cylinder 11, and valve A12 and pressure sensor are installed on the escape pipe of pressurized cylinder 11B13, is provided with pressure sensor C14 and flowmeter B15 on the pipeline of connection core holding unit 10 and pit shaft 2, connects rock core folderHold on device 10 and supervisor's 9 pipeline and be provided with pressure sensor D16; Connect the pipeline of pit shaft 2 and storage tank A1 and is connected be responsible for 9 andIn the pipeline of storage tank B3, have at least on a pipeline pump is installed.
The one end that connects storage tank A1 taking pit shaft 2 is front end, and pit shaft 2 is provided with two decompressions along vertical direction intervalValve 4, pit shaft 2 is divided into leading portion, stage casing and three large sections of back segment by two described pressure-reducing valves 4, on the sidewall in leading portion and stage casingAll be connected with two pipelines 8, on the sidewall of back segment, be connected with three pipelines 8.
An intermediate receptacle 24 is also all installed on described pipeline 8, and intermediate receptacle 24 is arranged at connection core holding unit10 and supervisor's pipeline of 9 on, described intermediate receptacle 24 inside are provided with the inner chamber of intermediate receptacle 24 are divided into two mutuallyThe independently piston 25 of cavity, on intermediate receptacle 24, two are provided with and connect respectively two independently inlet/outlet pipes of cavity, centreInlet/outlet pipe A26 in two inlet/outlet pipes of container 24 connects core holding unit 10, and another inlet/outlet pipe B27 of intermediate receptacle 24 connectsMeet supervisor 9, a valve E28 is all installed on inlet/outlet pipe A26 and inlet/outlet pipe B27, in the middle of pressure sensor D16 is arranged at and connectsOn the pipeline of container 24 and core holding unit 10.
The liquid in-out pipe 7 of described pit shaft 2 connects storage tank A1 by two arms simultaneously, propping up in two described armsOn pipe A, pump A17 is installed, the feed tube of pump A17 connects storage tank A1, and the drain pipe of pump A17 connects pit shaft 2, and pacifies on drain pipeValve B18 is housed, and described another arm B is upper is provided with safety valve A19 and valve successively along the direction from storage tank A1 to pit shaft 2Door C21; Described supervisor 9 connects storage tank B3 by two arms simultaneously, and the upper edge of arm C in two described arms is from storage tankB3 is provided with needle valve B22 and valve D23 successively to supervisor 9 direction, on described another arm D, safety valve is installedB29。
Described storage tank is fluid reservoir, waste liquid tank or gas tank.
When experiment, rock core is packed in core holding unit 10, according to fluid, mobile frictional resistance pressure drop in pit shaft 2 regulates and subtractsPressure valve 4, regulates needle valve B22, controls and flows out fluid flow in pipeline, opens valve B18, valve C21, and valve-off D23, opensMoving pump A17, pump A17 is constant flow pump, and the fluid constant speed in storage tank A1 is pumped in pit shaft 2, in the time being full of liquid in pit shaft 2, beats againOpen valve D23, open valve A12, add confined pressure to rock core, after flow speed stability, use pressure sensor A6, pressure sensor B13,The image data of pressure sensor C14, pressure sensor D16 and flowmeter A5, flowmeter B15, flowmeter C, described storage tank A1For fluid reservoir. Can extrapolate which rock core by piston 25 positions of intermediate receptacle 24 large on the impact of fluid injection section, by numberAccording to the study, analyze the importance of each factor that affects water injection well displacement efficiency.
Embodiment 4:
The present embodiment is the explanation to distributary acid effect assessment, as shown in Figure 3, and the many merits of oil-gas reservoir horizontal well dynamic analogEnergy experimental provision, it comprises storage tank A1, pit shaft 2 and storage tank B3, is distributed in interval on pit shaft 2 is provided with many according to reservoir permeabilityIndividual pressure-reducing valve 4, carries out segmentation to horizontal well pit shaft 2, and pit shaft 2 is divided into multiple large section by described multiple pressure-reducing valves 4, Mei Ge greatDuan Shangjun is provided with a flowmeter A5 and pressure sensor A6, described pit shaft 2 one end sealings, and the other end of pit shaft 2 is installedHave liquid in-out pipe 7, liquid in-out pipe 7 connects storage tank A1 by pipeline; The sidewall of pit shaft 2 is connected with multiple pipelines 8, according to each largeThe actual conditions of section are determined experiment rock core number, finally determine test test line 8 numbers, pipeline 8 according to rock core numberEnd connect supervisor 9, supervisor 9 connects storage tank B3, is all connected with a core holding unit 10, rock on described each pipeline 8A port of heart clamp holder 10 connects pit shaft 2 by pipeline, and another port of core holding unit 10 connects main by pipelinePipe 9, the confined pressure pipe of core holding unit 10 connects pressurized cylinder 11, and valve A12 and pressure are installed on the escape pipe of pressurized cylinder 11Power sensor B13, is provided with pressure sensor C14 and flowmeter B15 on the pipeline of connection core holding unit 10 and pit shaft 2, connectsConnect on core holding unit 10 and supervisor's 9 pipeline and be provided with pressure sensor D16; Connect pipeline and the company of pit shaft 2 and storage tank A1Connect in supervisor 9 and the pipeline of storage tank B3 and have at least on a pipeline pump is installed.
The one end that connects storage tank A1 taking pit shaft 2 is front end, and pit shaft 2 is provided with two decompressions along vertical direction intervalValve 4, pit shaft 2 is divided into leading portion, stage casing and three large sections of back segment by two described pressure-reducing valves 4, on the sidewall in leading portion and stage casingAll be connected with two pipelines 8, on the sidewall of back segment, be connected with three pipelines 8.
The liquid in-out pipe 7 of described pit shaft 2 connects storage tank A1 by two arms simultaneously, propping up in two described armsOn pipe A, pump A17 is installed, the feed tube of pump A17 connects storage tank A1, and the drain pipe of pump A17 connects pit shaft 2, and pacifies on drain pipeValve B18 is housed, and described another arm B is upper is provided with safety valve A19, pin successively along the direction from storage tank A1 to pit shaft 2Shape valve A20 and valve C21; On the pipeline of connection supervisor 9 and storage tank B3, edge is provided with pin from storage tank B3 successively to supervisor 9 directionShape valve B22 and valve D23.
Described storage tank is fluid reservoir, waste liquid tank or gas tank.
When experiment, rock core is packed in core holding unit 10, according to fluid, mobile frictional resistance pressure drop in pit shaft 2 regulates and subtractsPressure valve 4, regulates needle valve B22, controls and flows out fluid flow in pipeline, opens valve B18, valve C21, and valve-off D23, opensMoving pump A17, pump A17 is constant flow pump, and the fluid constant speed in storage tank A1 is pumped in pit shaft 2, in the time being full of liquid in pit shaft 2, beats againOpen valve D23, open valve A12, add confined pressure to rock core, after flow speed stability, use pressure sensor A6, pressure sensor B13,The image data of pressure sensor C14, pressure sensor D16 and flowmeter A5, flowmeter B15, flowmeter C, described storage tank A1For fluid reservoir. The data on flows of analytic record, sees whether acid solution enters low permeability reservoir and the serious reservoir of injury by designing requirement,According to the permeability of Darcy formula Fluid Computation rock core after rock core, analyze and whether reached uniform acid distribution, evenly improve eachThe object of layer permeability.
Claims (2)
1. oil-gas reservoir horizontal well dynamic analog multifunction experiment apparatus, is characterized in that: it comprises storage tank A(1), pit shaft (2) andStorage tank B(3), the upper interval of pit shaft (2) is provided with multiple pressure-reducing valves (4), and described multiple pressure-reducing valves (4) are divided into pit shaft (2)Multiple large section, a flowmeter A(5 is all installed on each large section) and pressure sensor A(6), described pit shaft (2) one end is closeEnvelope, the other end of pit shaft (2) is provided with liquid in-out pipe (7), liquid in-out pipe (7) connects storage tank A(1 by pipeline); Pit shaft (2)Sidewall is connected with multiple pipelines (8), and the end of pipeline (8) connects supervisor (9), and supervisor (9) connects storage tank B(3), described is eachOn pipeline (8), be all connected with a core holding unit (10), a port of core holding unit (10) connects pit shaft by pipeline(2), another port of core holding unit (10) connects supervisor (9) by pipeline, and the confined pressure pipe of core holding unit (10) connectsPressurized cylinder (11), is provided with valve A(12 on the escape pipe of pressurized cylinder (11)) and pressure sensor B(13), rock core connectedOn the pipeline of clamper (10) and pit shaft (2), be provided with pressure sensor C(14) and flowmeter B(15), core holding unit connected(10) and on supervisor's (9) pipeline be provided with pressure sensor D(16); Connect pit shaft (2) and storage tank A(1) pipeline and be connectedSupervisor (9) and storage tank B(3) pipeline in have at least on a pipeline pump be installed, on described pipeline (8), be also all provided with oneIndividual intermediate receptacle (24), intermediate receptacle (24) is arranged at and connects core holding unit (10) and be responsible on the pipeline of (9), described inBetween container (24) inside be provided with the piston (25) that the inner chamber of intermediate receptacle (24) is divided into two separate cavitys, inBetween upper two of container (24) be provided with and connect respectively two independently inlet/outlet pipes of cavity, two inlet/outlet pipes of intermediate receptacle (24)In inlet/outlet pipe A(26) connect core holding unit (10), another inlet/outlet pipe B(27 of intermediate receptacle (24)) connect supervisor (9),Inlet/outlet pipe A(26) and inlet/outlet pipe B(27) on a valve E(28 is all installed), pressure sensor D(16) be arranged at connect in the middle ofOn the pipeline of container (24) and core holding unit (10), described connection storage tank A(1) with the pipeline of pit shaft (2) on along from storage tank A(1) to the direction of pit shaft (2), safety valve A(19 is installed successively), needle valve A(20) and valve C(21); Described supervisor (9)Connect storage tank B(3 by two arms simultaneously), on the arm C in two described arms, pump B(30 is installed), pump B(30)Feed tube connects storage tank B(3), pump B(30) drain pipe connect supervisor (9), and valve F(31 is installed on drain pipe), described inAnother arm D on safety valve B(29 is installed), the method for this multifunction experiment apparatus simulated oil Horizontal Wells For Gas Reservoirs comprise withLower step:
S1, will intermediate receptacle (24) connect in the cavity of core holding unit (10) and fill reservoir fluid, pack rock core into rock core folderHold in device (10), according to fluid, mobile frictional resistance pressure drop in pit shaft (2) regulates pressure-reducing valve (4), opens valve F(31), allValve E(28) and valve A(12), regulate needle valve A(20), control and flow out fluid flow in pipeline, valve-off C(21);
S2, start pump B(30), by storage tank B(3) in fluid constant speed pump into intermediate receptacle (24), promote in intermediate receptacle (24)Piston (25) move up, make reservoir fluid enter test pipeline in, in the time being full of liquid in pit shaft (2), open again valve C(21), and open valve A(12), add confined pressure to rock core, after flow speed stability, use pressure sensor A(6), pressure sensor B(13), pressure sensor C(14), pressure sensor D(16) and flowmeter A(5), flowmeter B(15), the collection number of flowmeter CAccording to;
S3, after step S2 finishes, the flow dynamics collecting according to the distribution of the permeability of rock core and flowmeter, analyzes and oozesThe thoroughly differential impact on production profile of rate, removes pit shaft (2) subsequently, and from core holding unit (10), pipeline out directly connectsReceive valve C(21), be horizontal well infinite fluid diversion, along journey, the core permeability during without pressure drop distributes production fluid is cutd open horizontal segmentThe impact of face.
2. oil-gas reservoir horizontal well dynamic analog multifunction experiment apparatus according to claim 1, is characterized in that: with pit shaft(2) connect storage tank A(1) one end be front end, pit shaft (2) is provided with two pressure-reducing valves (4), institute along vertical direction intervalPit shaft (2) is divided into leading portion, stage casing and three large sections of back segment by two pressure-reducing valves (4) of stating, equal on the sidewall in leading portion and stage casingBe connected with two pipelines (8), on the sidewall of back segment, be connected with three pipelines (8).
Priority Applications (1)
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