CN1563669A - Pump drawing type formation tester through cased hole cable - Google Patents
Pump drawing type formation tester through cased hole cable Download PDFInfo
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- CN1563669A CN1563669A CN 200410008832 CN200410008832A CN1563669A CN 1563669 A CN1563669 A CN 1563669A CN 200410008832 CN200410008832 CN 200410008832 CN 200410008832 A CN200410008832 A CN 200410008832A CN 1563669 A CN1563669 A CN 1563669A
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Abstract
This is a casing-pipe well electric cable pump drawing stratum tester. It is constructed with the electric control part of ground surface, and underground test part it is installed in the inner part of casing pipe, between the two parts there are electric cable connected them, and provide electric power for underground part. To control the action of test part of underground, receive, analysis and to deal with the data, and transport them to the part of ground surface. The underground test part is installed in the casing pipe well, it accomplish to fix position, to seal and separate, to draw out, to take sample, and to measure several parameter of the well, and transport these tested data up to the control part of ground surface. The test part contains: the electronic unit, the pressure balancer unit, and the hydraulic pressure unit, the up-separator unit of draw pump, the low-separator unit of draw pump, and the fitter adjuster unit.
Description
Technical field
The present invention relates to a kind of formation tester, specifically, relate to a kind of being applied in the cased well, be used to measure the tester of reservoir (oil-gas Layer) fluid properties, physical property characteristic and reservoir energy.More particularly, the formation tester that the present invention relates to is applied to be transferred to the down-hole with logging cable in the cased well, to reservoir position, packing, with suction pump (plunger displacement pump) reservoir fluid is aspirated, and then reservoir is carried out the formation tester of various parameter measurements.
Background technology
In petroleum exploration and development process,, just need carry out dynamic evaluation to reservoir in order further to grasp fluid properties, physical property characteristic and the reservoir energy of reservoir (oil-gas Layer).Method in common is tested the stratum exactly at present; Can be open hole well formation testing and cased well formation testing according to different situations and purpose to the method for testing on stratum.
The cased well formation testing has two big classes, and a class is a drill string formation testing method, and a class is the cable formation testing method.
Drill string formation testing method is with drill string or oil pipe formation tester to be transferred to the down-hole, pass through lifting type or pressure-controlled operation formation tester on ground, reservoir is carried out packing, opens or closes testing valve, formation fluid is flowed, pressure and temperature in the fluid flow process carries out track record over time, and convection cell takes a sample, and then reservoir is carried out overall merit.This method and technology maturation, interpretation data reliability standard height.Yet its weak point is: long construction period, and labour intensity is big, the positioning action complexity, security control is poor, especially constructs on deep-well or offshore drilling platform, and the shortcoming of this method is more outstanding.
The cable formation testing method is meant with cable transmits, navigates to the down-hole to formation tester, send control signal by the terrestrial operation panel, make the downhole testing device carry out the backup packing to reservoir, formation fluid is carried out suction of small size amount and sampling, and pressure and temperature carried out track record, and then reach the purpose that oil-gas Layer is estimated.This method makes the formation testing electrification become possibility.Yet, because the employed packer of this method is not all the packing of oil reservoir well section, but one " point " on the packing borehole wall, thereby the reservoir data generality of being tried to achieve is relatively poor.Moreover, since its suction pump locate can only aspirate once with a packing " point " and aspiration less, thereby its investigative range is less, high pressure physical property sample is also untrue, its reason is to fail the interference of pollution abatement band.So the explanation results of gained can not reflect the true appearance of oil-gas Layer more exactly.
Summary of the invention
In order to overcome drill string formation testing long construction period, labour intensity is big, the positioning action complexity, the deficiency of security control difference, also packer carries out packing to " point " on the borehole wall in the cable formation testing in order to overcome,, take a sample false shortcoming too small to packing point aspiration, the purpose of this invention is to provide a kind of be applied in the cased well, with logging cable be transferred to the down-hole, can position oil reservoirs or oil storage interval, packing, suction and then formation tester that various parameters are measured.
For achieving the above object, the present invention by the following technical solutions: a kind of cased well cable pumping-style formation tester, it mainly partly is made of ground electric control system and the downhole testing that is installed in the cased well; Link to each other by logging cable between ground electric control system and the downhole testing part;
Described ground electric control system partly provides power supply by logging cable to described downhole testing, controls the action of downhole testing part, receives, analyzes, handles the various data that downhole testing is partly uploaded;
Described downhole testing partly is to be placed down in the cased well with logging cable, mainly finish location to tested reservoir, to setting and deblocking by the well logging section, tested reservoir fluid is carried out suction, the sampling of controlled volume, the measurement of various parameters, and measured various data are uploaded to described ground electric control system by logging cable; It is formed by electronics joint unit, pressurizer unit, hydraulic pressure joint unit, suction pump upper packer unit, strainer adjustment joint unit and lower packet unit combination from top to bottom successively;
The two ends of each component units of downhole testing part are blind spigot, and each component units fits together by blind spigot to each other, and tightly lock, fix, seal complete downhole testing part of composition by the trip sword.
In specific embodiments of the invention,
Described downhole testing part also comprises a head harness, and an end of this head harness links to each other with the ground electric control system by logging cable, and the other end saves the unit with electronics in the downhole testing part and links to each other; It mainly works logging cable and the two-part effect of downhole hardware of connecting.
Electronics joint unit, described down-hole mainly is made up of depth correction system and down-hole microcomputer control system; Mainly finish the various data of the location to reservoir, the operational order that receives biography under the electric control system of ground, the measurement of received well lower sensor, and be uploaded to the ground electric control system after treatment.
Described pressurizer unit mainly is made up of pressurizer cylinder body and pit shaft head of liquid sensor; Its function is balancing sleeve well shaft and tester external and internal pressure, the effect that protection tester, the outer head of liquid of monitoring pit shaft change.
Described hydraulic pressure joint unit mainly is made up of the sensor of motor, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve, measurement fluid temperature (F.T.), pressure etc., these elements are integrated in the hydraulic pressure joint unit by the hydraulic principle, form hydraulic circuit and electrical circuit; Major function is to finish under the ground-based computer control system the various operation elements instructions that pass to open and close program, monitoring reservoir fluid resistivity, the temperature of various hydraulic valves, electromagnetic valve, realization tester, the variation of pressure, control and measuring device duty by hydraulic circuit.
Described suction pump upper packer unit is mainly by suction pump assembly (plunger displacement pump of Driven by Hydraulic Cylinder) with by the packer assembly of Driven by Hydraulic Cylinder; It is mainly finished the packing stratum, reservoir fluid is aspirated and high pressure physical property sample.
Described filtration adjustment joint unit mainly is made up of last strainer, adjustment joint (built-in standby electronic pressure gauge holder tube), following strainer; Upper and lower strainer rises and is communicated with reservoir and filters with tester and to reservoir fluid, and the spacing of adjusting straddle test is saved in adjustment.
Described lower packet unit mainly is made of the packer and the standby addition end of Driven by Hydraulic Cylinder; The former is mainly used in to stride in (layering) test testing well pars infrasegmentalis reservoir is separated, and the latter is as the usefulness of addition stand-by provision.
Advantage of the present invention is:
1, short construction period, labour intensity is little, and the location, packing is accurate,, various parameter measurements are accurate
Because the present invention partly is transferred to downhole testing in the cased well with logging cable, so short construction period, labour intensity are little.Because the present invention controls part by ground-based computer to send out directive command, finish downhole packer to by the setting and deblocking of well logging section again, so, the present invention to tested reservoir locate, packing is accurate.Again since the present invention be by ground-based computer control part, measurement and control cable is controlled the action of the various electromagnetic valves in down-hole, relay, and finishes suction, the sampling of reservoir fluid being carried out controlled volume by suction pump (being plunger displacement pump); Finish enforcement monitoring with fluid temperature (F.T.), pressure, resistivity sensor to the various parameters of formation fluids process; And the various data that write down are transferred to ground-based computer data monitoring and treatment system by logging cable, and then finish dynamic evaluation to reservoir, so the present invention is simple to operate, measurement to the various parameters of reservoir is accurately, is reliable to the analysis of data; And the present invention has shortened test period, has reduced labour intensity and testing expense, can monitor degree and safety operation control degree height.
2, automaticity height of the present invention
Because the present invention is the action of controlling various hydraulic valves in down-hole and electromagnetic valve by the ground electric control system, upper and lower packer is finished by the packing and the deblocking of well logging section, suction pump is finished by suction, the sampling of well logging section, and the detection data that various sensors are uploaded are analyzed, handle, so, automaticity height of the present invention, analysis result accuracy height.
3, the present invention is to big by the aspiration of well logging section, and test result reflects the true colours of reservoir more realistically
Because upper and lower packer of the present invention is to be carried out packing and deblocking to whole by well logging section reservoir, finish suction, sampling by suction pump then to tested reservoir, aspiration is big, so, what each sensor of the present invention detected is the current intelligence of whole reservoir, reaction be the true appearance of whole tested reservoir.
Again since packer of the present invention can carry out conventional packing and stride different oil gas well sections every packing, it strides compartment apart from adjusting according to the oil-gas Layer thickness again, suction pump can be carried out the suction of controlled volume to reservoir fluid again, and can obtain real high pressure property sample, this just makes that test target of the present invention is broader, and test result is reacted the true colours of reservoir more realistically.
4, test function of the present invention is strong, and testing expense is low
The present invention not only can realize conventional packing (single packer) test, choosing layer (stride every) packing (the two envelope device) test to reservoir, and, can also finish pressure drop, press extensive test assignment common stratum, and the suction of reservoir being carried out the controlled volume amount, carry out wider dynamic test evaluation, so test function of the present invention is powerful.In addition, the present invention not only can realize the formation testing task, and, can also realize the target that conventional formation testing reaches, saved the expense of formation testing greatly.
Description of drawings
Fig. 1 is cased well cable pumping-style formation tester assembling of the present invention, structural representation
Fig. 2 is an electrical installation theory diagram of the present invention
Fig. 3 is a ground control system control program operating principle block diagram of the present invention
Fig. 4 is electronics joint block construction sketch of the present invention
Fig. 5 is a pressurizer block construction sketch of the present invention
Fig. 6 is single non-structure sketch for hydraulic pressure of the present invention saves
Fig. 7 is a suction pump upper packer block construction sketch of the present invention
Fig. 8 adjusts joint block construction sketch for the present invention filters
Fig. 9 is a lower packet block construction sketch of the present invention
Figure 10 is electronics joint unit controls program work theory diagram of the present invention
Figure 11 is hydraulic pressure joint cell operation theory diagram of the present invention
The specific embodiment
As shown in Figure 1, cased well cable pumping-style formation tester of the present invention mainly is made of ground electric control system 1 and the downhole testing parts 2 that are installed in the cased well 4; Link to each other by logging cable 3 between ground electric control system 1 and the downhole testing part 2, control the action of downhole testing part 2, receive, analyze, handle the various data that downhole testing is partly uploaded.
As shown in the figure, downhole testing part 2 is installed in the cased well 4; It is by being combined by head harness 21, electronics joint unit 22, pressurizer unit 23, hydraulic pressure joint unit 24, suction pump 25, suction pump upper packer unit 26, strainer adjustment joint unit 27, lower packet unit 28 successively from top to bottom.In order to make each part mentioned above assembling, easy for installation, the present invention is designed to blind spigot with the two ends of above-mentioned each unit, can apace each unit be fitted together by blind spigot aboveground, tightly locks by swimming sword, fixes, good seal.
As shown in Figure 2, ground electric control system 1 mainly is made up of ground surge tank, the cabinet that boosts, switch board, computer, logging winch, its major function is to provide power supply to downhole testing part 2, send and control order, receive, handle downhole testing part 2 feedback data, and to downhole testing partly monitor in real time, data are handled, analyze and show.Ground Control part 1 links to each other with downhole testing part 2 by cable 3, and the various operational orders of following biography are controlled the action of down-hole each several part, receives various survey data, handles the data that receive.
Downhole testing part 2 is mainly finished the location to tested reservoir, to setting and deblocking by the well logging section, tested reservoir fluid is carried out suction, the sampling of controlled volume, finish monitoring with fluid temperature (F.T.), pressure, resistivity sensor, and measured various data are transferred to ground-based computer data monitoring and treatment system by logging cable the various parameters of formation fluids process.Wherein,
Electronics joint unit 22, described down-hole mainly is made up of depth correction system (as GR, magnetic orientation measurement mechanism) and down-hole microcomputer control system.The depth correction system mainly finishes the location to reservoir.The down-hole microcomputer control system is mainly finished and is gathered the data that various signal transducers (as GR instrument, casing coupling location survey circuit (CCL), pressure, temperature, flow transmitter etc.) detect, handle the data of gathering, and these data are sent to the ground Computerized monitor system by serial ports through carrier communication mode; Simultaneously, receive the control signal that the ground microcomputer is sent, and, realize the test operation of tester duty (seat envelope, suction, sampling, deblocking etc.) according to the action of control signal control corresponding solenoid valve.
Described pressurizer unit 23 mainly is made up of pressurizer cylinder body and pit shaft head of liquid sensor.Its function is balancing sleeve well shaft and tester external and internal pressure, the effect that protection tester, the outer head of liquid of monitoring pit shaft change.
Described hydraulic pressure joint unit 24 mainly is made up of the sensor of motor, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve, measurement fluid temperature (F.T.), pressure etc., and these devices are integrated in 24 li of hydraulic pressure joint unit by the hydraulic principle.Its major function is to finish the variation of the various operation element instruction unpacks that pass under the ground-based computer control system and each working programme of closing various hydraulic valves, electromagnetic valve, realization tester, monitoring reservoir fluid resistivity, temperature, pressure.
Described suction pump upper packer unit 26 is mainly by suction pump 25 (plunger displacement pump of Driven by Hydraulic Cylinder) with by the packer assembly of Driven by Hydraulic Cylinder (if straddle test it use as upper packer).It is mainly finished the packing stratum, reservoir fluid is aspirated and high pressure physical property sample.
Described filtration adjustment joint unit 27 mainly is made up of last strainer, adjustment joint (built-in standby electronic pressure gauge holder tube), following strainer.Upper and lower strainer rises and is communicated with reservoir and filters with tester and to reservoir fluid, and the spacing of adjusting straddle test is saved in adjustment.
Described lower packet unit 28 mainly is made of the packer and the standby addition end 29 of Driven by Hydraulic Cylinder.The former is mainly used in to stride in (layering) test testing well pars infrasegmentalis reservoir is separated, and the latter is as the usefulness of addition stand-by provision.
Below in conjunction with specific embodiments of the invention and accompanying drawing the present invention is described in further detail.
In specific embodiments of the invention, described ground electric control system 1 comprises: ground surge tank, the cabinet that boosts, switch board, microcomputer.The ground surge tank and the cabinet that boosts are that three-phase 380V (50HZ) alternating current is connected output two-phase quadrature alternating current through power control switch, three-phase automatic coupling voltage regulator, step-up transformer vector.After collecting ring, power to down-hole two-phase AC induction motor by logging cable, head harness 21 by the panel motor start switch for two-phase quadrature alternating current.In addition, 220V (50HZ) alternating current is delivered in the secondary centre tap of ground modulation transformer after isolating transformer is isolated, and again through collecting ring, the oil well cable is delivered to the down-hole modulation transformer.After drawing on this transformer secondary output centre cap, divide two-way, the one tunnel delivers to each solid switch, another road after step-down, rectification, voltage stabilizing, obtain ten 5V ,+10V ,+the 12V direct current, supply with downhole electronics and use.As Fig. 2, shown in Figure 3, described switch board is to serve as the single-chip microcomputer digital control system of main formation with CPU (80C55), and all control programs are solidificated in the read-only storaging chip (EPROM27C32) of a slice 4k byte.The single-chip microcomputer that constitutes switch board is mainly finished the function key on the panel, gauge tap state acquisition in microcomputer, forms gain word and control word; The gain word is used for the gain-adjusted of GR, to satisfy the requirement of GR scale; Control word sends to the down-hole microcomputer by carrier communication mode, and the down-hole microcomputer makes tester realize each duty according to the duty of each electromagnetic valve in the control word control hydraulic circuit, finishes as test process such as seat envelope, suction, sampling, deblockings; Simultaneously, the ground microcomputer receives and handles the various signals that the down-hole microcomputer sends, with parameters such as GR counting, hydraulic pump works pressure, seat envelope operating pressure, fluid temperature (F.T.), fluid pressure and fluid resistivities, be presented in the ten's digit mode on the display window of panel.In addition, ground control system provides a RS232 serial delivery outlet, a GR/CCL to simulate delivery outlet.This two delivery outlet links to each other with the computer of ground data logging system, thereby realizes the on-line operation of logging system and tester system.Ground computer mainly finish to test data collect, in-situ processing and explanation.
As shown in Figure 1 and Figure 2, an end of described head harness 21 links to each other with ground electric control system 1 by cable 3, and the other end saves unit 22 with electronics in the downhole testing part 2 and links to each other.It mainly plays a part aboveground, the butt joint of down-hole two parts, connects.
Fig. 4 is the structure diagram of electronics joint in the specific embodiment of the invention.As shown in the figure, in the specific embodiment of the invention, electronics joint unit 22 is made of protection sleeve 221, the GR/casing coupling magnetic orientation measuring circuit, the down-hole microcomputer measuring and controlling circuit 222 that are installed in the sleeve.The upper and lower end of protection sleeve is blind spigot 223,224, is provided with a hollow tube 225 in the sleeve, and hollow tube 225 is used to lay feed cable, signal cable.The last blind spigot 223 of electronics joint unit 22 is tightly connected by a union and Malong 21 a tight lock, and following blind spigot 223 is tightly connected by union and pressurizer 23.
Fig. 5 is the structure diagram of pressurizer 23 in the specific embodiment of the invention.As shown in the figure, it by pressurizer cylinder body 231, be arranged on the piston 232 in the cylinder body, annular space head of liquid sensor 233 and the bypass valve 234 that is arranged in the cylinder body constitutes.The two ends up and down of cylinder body are blind spigot 235,236, go up blind spigot 235 and are tightly connected by trip sword and electronics joint unit 22 tight locks, and following blind spigot 236 is tightly connected by trip sword and hydraulic pressure joint unit 24 tight locks.In cylinder body, also be provided with a hollow tube 237, be used to lay feed cable, signal cable.
Fig. 6 is the structure diagram of hydraulic pressure joint unit 24, and as shown in the figure, it mainly is made of protection sleeve 241, the sensor etc. that is installed in motor in the protection sleeve, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve, measurement fluid temperature (F.T.), pressure; Motor, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve in the protection sleeve constitute some roads oil circuit and circuit, and the suction pump that control communicates with it, upper packer and lower packet action realize packing, suction, sampling to quilt well logging section.As shown in the figure, the upper and lower side of protection sleeve 241 is blind spigot 242,243, goes up blind spigot 242 and is tightly connected by trip sword and pressurizer 23 tight locks, and following blind spigot 243 is tightly connected by trip sword and suction pump upper packer 26 tight locks.
In protection sleeve 241 be from top to bottom motor, hydraulic pump, on valve position section, pressurized cylinder, valve position section down.Various hydraulic valves, electromagnetic valve are positioned at upper and lower valve position section 244,245, and the pressure sensor of monitoring hydraulic circuit is positioned at the last valve position section 244 of hydraulic pressure assembly; The sensor of monitoring formation fluid pressure, temperature and fluid resistivity is positioned at the following wealthy position section 245 of hydraulic pressure assembly, and these sensors are by pipeline strainer joint place and combination of zones on filtration adjustment joint unit 27.
Fig. 7 is the structure diagram of suction pump upper packer unit 26, and as shown in the figure, it mainly is made of protection sleeve 261, the suction pump 25, various electromagnetic valve, hydraulic valve and the packers 262 that are installed in the protection sleeve 261.As shown in the figure, protection sleeve 261 is divided into three sections, and suction pump 25 is positioned at the top of protection sleeve, and various electromagnetic valves and hydraulic valve are positioned at the middle part 263 of protection sleeve, and packer 262 is positioned at the bottom of protection sleeve.The interior hollow tube 264 that also is provided with at protection sleeve is used to lay feed cable, signal cable.In addition, the upper and lower side of protection sleeve 261 also is designed to blind spigot, goes up blind spigot 265 and is tightly connected by trip sword and hydraulic pressure joint unit 24 tight locks, and following blind spigot 266 is adjusted joint 27 and tightly locked and be tightly connected with filtering by the trip sword.
Fig. 8 is strainer adjustment joint unit 27 structural representations, and it mainly is made up of last strainer 271, adjustment joint 272 and following strainer 273.Upper and lower strainer has been the effect that is communicated with reservoir and tester and reservoir fluid is filtered.Last strainer 271 epimeres are connected with upper packer 26, and hypomere is connected with adjustment joint 272.Adjust joint 272 and be to adjust and stride the compartment distance between the upper and lower packer; Its upper end is connected with last strainer 271, and the lower end is connected with following strainer 273, and following strainer is connected with lower packet assembly 28 upper ends, adjusts joint and is built-in with standby pressure meter holder tube.
Fig. 9 is lower packet unit 28 structural representations, and it mainly is made of protection sleeve 281, the packer 282 that is installed in the sleeve.Lower packet 28 cooperates with upper packer 26 tested reservoir (oil-gas Layer) is carried out packing, and the reservoir of the 25 pairs of packings of suction pump in the upper packer 26 aspirates, takes a sample; The all temps, pressure, the flow transmitter that are installed in the hydraulic pressure joint unit carry out the measurement of various parameters to tested oil reservoirs, and the parameter after will measuring is uploaded to aboveground control section and carries out data analysis, processing.The lower end of protection sleeve is connected with standby addition end 29, in order to increasing new parts, as devices such as standby sampling tube, downforce meters.In protection sleeve, be provided with the hollow tube 284 that is used for cable laying.
Core of the present invention is electronics joint unit 22, hydraulic pressure joint unit 24 and suction pump upper packer unit 26, the lower packet unit 28 in the downhole testing part.
Electronics joint unit 22 mainly finish to the location of reservoir and to the data (as GR, CCL, pressure, temperature, flow etc.) that various signal transducers are measured gather, the A/D conversion process, and these signals are sent to the ground microsystem by serial ports through carrier communication mode; Simultaneously, receive the control signal that the ground microcomputer is sent, and, realize the test operation of tester duty (seat envelope, suction, sampling, deblocking etc.) according to the action of control signal control corresponding solenoid valve.As shown in Figure 2, microcomputer control system in the electronics joint unit, down-hole mainly is to serve as the single-chip microcomputer digital control system of main formation with CPU (80C55), it mainly is that power supply that the ground electrical control system is provided is to various power motors, various sensor (pressure, temperature, the liquid resistivity sensor) power supply, and ground system send control pass under the signal control and monitoring device, finish sequence of operations, again pressure, temperature, the information of liquid property sensor induction is transformed into data signal, and monitors earthward with data processing system by certain time interval and to transmit.
The down-hole Computerized monitor system adopts the modular construction design, its workflow diagram is as shown in Figure 10: program is after finishing initial work, at first carry out receiver module, in receiver module, CPU receives interruption marking-up position " RI " by inquiry and judges whether the ground microcomputer sends data here, is " 0 " as " RI ", then continues inquiry, as " RI " is that " 1 " then reads in control word, carries out the solenoid control module then; In the solenoid control module, CPU will rigidly connect the control word of receiving and the control word step-by-step that received last time compares, as changes, then will change the position and deliver to corresponding solid switch, make the action of respective electrical magnet valve,, then carry out the A/D modular converter downwards as no change; In the A/D modular converter, CPU connects each analog-to-digital conversion passage successively, and to pump pressure, packer operating pressure, signals such as fluid pressure, temperature, character are sampled, and visit the TO counter simultaneously, obtain the step-by-step counting of sample GR, carry out sending module at last; Sending module will rigidly connect the control word of receiving and send to the ground microcomputer together with data that collect etc.
Hydraulic pressure joint unit 24 mainly is made up of the sensor of motor, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve, measurement fluid temperature (F.T.), pressure etc., these devices are integrated in the hydraulic pressure joint unit by the hydraulic schematic diagram, form some hydraulic circuits and electric loop.As shown in figure 11, the driven by motor hydraulic pump is controlled various hydraulic valves, electromagnetic valve by hydraulic circuit, boost-up circuit in the hydraulic pressure joint, and upper and lower packer is finished by the setting of well logging section, deblocking, and suction, the sampling of suction pump to setting the well section.
Packing, suction, the sampling to tested oil reservoirs or oil reservoirs well section mainly finished in suction pump upper packer unit 26 and lower packet unit 28.
The present invention realizes the process of being tested quickly and accurately by the well logging section:
1, the preparatory stage
Aboveground, the blind spigot with each test component of down-hole docks each other, forms earlier; Then, the whole downhole testing after the assembling is partly carried out self check, after self check is passed through; Partly transfer to downhole testing in the cased well by logging winch, logging cable;
2, downhole testing is partly located
By the GR in the down-hole electronics joint unit/casing coupling magnetic orientation measuring circuit location, the filtration adjustment in the downhole testing part is saved cell location at tested reservoir (oil-gas Layer) position;
3, primer fluid pressing system
Start motor, hydraulic pump in the underground hydraulic pressure joint unit by aboveground electric control system, be the hydraulic circuit fuel feeding;
4, upper and lower packer setting
When circuit pressure is elevated to greater than 4MPa, aboveground electrical monitoring system is given an order, open the control packer sit every electromagnetic valve, make upper and lower packer be in the state of setting, give packer setting cylinder up and down along with hydraulic pump continues feed flow, upper and lower packer setting is ordered about in piston motion; It is 9Mpa that the maximum of this moment sets pressure;
5, suction pump suction, conventionally test
Aboveground monitoring system is given an order, open electromagnetic valve and make suction pump work, the motion of suction pump (hydraulic planger pump) one-stroke once, there is 2000ml to intend the volume of vacuum state in the suction pump this moment reservoir fluid cylinder body, at this moment open the electromagnetic valve of control testing valve, testing valve is opened, the oil-gas Layer fluid by upper and lower strainer after tested valve enter into the reservoir fluid cylinder body of suction pump automatically, this moment, bleed valve cut out; Can carry out pressure drop like this, press extensive dynamic test evaluation;
6, aboveground electrical monitoring system is analyzed, is handled the data that the downhole testing system detects
The data that various sensors detect are gathered in electronics joint unit, down-hole, and the microcomputer that these data are uploaded in the aboveground electrical monitoring system after the A/D conversion is handled; Microcomputer in the aboveground electrical monitoring system is analyzed, adds up, is handled the data of uploading;
7, upper and lower packer deblocking
After pressing extensive EOT, aboveground electrical monitoring system is given an order once more, by various hydraulic valves, electromagnetic valve, closes testing valve and bleed valve, and makes upper and lower packer finish deblocking to tested oil reservoir; Hydraulic oil in the hydraulic circuit is pushed packer deblocking cylinder, promote piston and make the packer deblocking;
8, close hydraulic system
9, part of detecting under the winding shaft
So far whole test process is finished.
In test process, when cased well wellbore environment pressure was higher, packer setting needed the higher pressure that sets, hydraulic circuit needs supercharging, start the pressurization system in the hydraulic pressure joint unit this moment, pressurization system can make and set the promotion of pressure to 29MPa, packer setting about making.At this moment suction pump also can be worked under high pressure conditions.
Extract the sample of tested reservoir if desired, when pressing extensive test to reach requirement, close testing valve and bleed valve by solenoid control, at this moment the sample of existing 2000ml just is enclosed in the reservoir fluid cylinder body of suction pump, if need obtain the real fluid (high pressure matter sampling) of reservoir more accurately, aboveground electrical monitoring system is opened testing valve and bleed valve, suction pump is aspirated again, to when reservoir fluid electrical resistivity properties sensor reflects that obtained fluid is the real fluid of reservoir, close testing valve and bleed valve, this sample can be used as the high pressure property sample and preserves.By the time tester promotes when arriving ground, opens bleed valve or manual bleed valve, starts suction pump, and sample displacement is prepared against test in high pressure matter sampling steel cylinder.
The above is preferred embodiment of the present invention only, and protection scope of the present invention is not limited thereto.Anyly all belong within the protection domain of the present invention based on the equivalent transformation on the technical solution of the present invention.
Claims (10)
1, a kind of cased well cable pumping-style formation tester is characterized in that: it mainly partly is made of ground electric control system and the downhole testing that is installed in the cased well; Link to each other by logging cable between ground electric control system and the downhole testing part;
Described ground electric control system partly provides power supply by logging cable to described downhole testing, controls and the action of part of detecting down, receives, analyzes, handles the various data that downhole testing is partly uploaded;
Described downhole testing partly is installed in the cased well, mainly finish location to tested reservoir, to setting and deblocking by the well logging section, tested reservoir fluid is carried out suction, the sampling of controlled volume, the measurement of various parameters, and measured various data are uploaded to described ground electric control system by logging cable; It is formed by electronics joint unit, pressurizer unit, hydraulic pressure joint unit, suction pump, suction pump upper packer unit, strainer adjustment joint unit and lower packet unit combination from top to bottom successively;
The two ends of each component units of downhole testing part are blind spigot, and each component units fits together by blind spigot to each other, and tightly lock, fix, seal complete downhole testing part of composition by the trip sword.
2, a kind of cased well cable pumping-style formation tester according to claim 1, it is characterized in that: described downhole testing part also comprises a head harness, one end of this head harness links to each other with the ground electric control system by logging cable, and the other end links to each other with also descending the electronics joint unit in the part of detecting.
3, a kind of cased well cable pumping-style formation tester according to claim 2 is characterized in that: described down-hole electronics joint unit mainly is made of protection sleeve, the GR/casing coupling magnetic orientation measuring circuit, the down-hole microcomputer measuring and controlling circuit that are installed in the sleeve; The upper and lower end of protection sleeve is blind spigot, is provided with a hollow tube that is used to lay feed cable, signal cable in the sleeve; The last blind spigot of electronics joint unit is tightly connected by union and the tight lock of Malong head, and following blind spigot is tightly connected by union and pressurizer.
4, a kind of cased well cable pumping-style formation tester according to claim 3, it is characterized in that: described down-hole microcomputer measuring and controlling circuit mainly is made of the eeprom memory of A/D change-over circuit, 80C55 single-chip microcomputer and storing control program.
5, a kind of cased well cable pumping-style formation tester according to claim 3, it is characterized in that: described pressurizer unit mainly is made up of pressurizer cylinder body and pit shaft head of liquid sensor.
6, a kind of cased well cable pumping-style formation tester according to claim 5 is characterized in that: described pressurizer unit mainly by the pressurizer cylinder body, be arranged on the piston in the cylinder body, annular space head of liquid sensor and the bypass valve that is arranged in the cylinder body constitutes; The two ends up and down of cylinder body are blind spigot, go up blind spigot and are tightly connected by the tight lock of trip sword and electronics joint unit, and following blind spigot is tightly connected by the tight lock of trip sword and hydraulic pressure joint unit; In cylinder body, also be provided with a hollow tube that is used to lay feed cable, signal cable;
Bottom at described cylinder body inner carrier also is provided with spring, and when external pressure reduced, it ordered about piston stroking upward and makes pit shaft filtrate discharge pressure equalizer.
7, a kind of cased well cable pumping-style formation tester according to claim 6 is characterized in that: described hydraulic pressure joint unit mainly is made of protection sleeve, the sensor etc. that is installed in motor in the protection sleeve, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve, measurement fluid temperature (F.T.), pressure; Motor, hydraulic pump, pressurized cylinder, various hydraulic valve, electromagnetic valve in the protection sleeve constitute some roads hydraulic circuit and circuit, the described suction pump that control communicates with it, upper packer and lower packet action;
In described protection sleeve be from top to bottom motor, hydraulic pump, on valve position section, pressurized cylinder, valve position section down; Various hydraulic valves, electromagnetic valve are positioned at upper and lower valve position section, and the pressure sensor of monitoring hydraulic circuit is positioned at the last valve position section of protection sleeve; The sensor of monitoring formation fluid pressure, temperature and fluid resistivity is positioned at the following wealthy position section of protection sleeve; Described various sensor is by pipeline strainer joint place and combination of zones on filtration adjustment joint unit;
The upper and lower side of described protection sleeve is blind spigot, goes up blind spigot and is tightly connected by trip sword and the tight lock of pressurizer, and following blind spigot is tightly connected by trip sword and the tight lock of upper packer.
8, a kind of cased well cable pumping-style formation tester according to claim 7 is characterized in that: described suction pump upper packer unit mainly by protection sleeve, be installed in the suction pump in the protection sleeve, various electromagnetic valve, hydraulic valve and packer and constitute; Described protection sleeve inside is divided into three sections, and suction pump is positioned at the top of protection sleeve, and various electromagnetic valves and hydraulic valve are positioned at the middle part of protection sleeve, and packer 262 is positioned at the bottom of protection sleeve; Also be provided with a hollow tube that is used to lay feed cable, signal cable at protection sleeve interior;
The upper and lower side of described protection sleeve is blind spigot, and upward blind spigot is tightly connected by swimming tight lock the in sword and hydraulic pressure joint unit, and following blind spigot is tightly connected by swimming sword and filtering to adjust to save tightly to lock.
9, a kind of cased well cable pumping-style formation tester according to claim 8 is characterized in that: described strainer adjustment joint unit is made up of last strainer, adjustment joint and following strainer successively; Last strainer epimere is connected with upper packer, and hypomere is connected with the adjustment joint; Adjust joint and be to be used for adjusting and stride the compartment distance between the upper and lower packer, its upper end is connected with last strainer, and the lower end is connected with following strainer; Following strainer is connected with the lower packet upper end;
Be built-in with standby pressure meter holder tube at described adjustment joint.
10, a kind of cased well cable pumping-style formation tester according to claim 9 is characterized in that: described lower packet unit mainly is made of protection sleeve, the packer that is installed in the sleeve;
The upper end of described protection sleeve is blind spigot, adjusts the tight lock in joint unit by trip sword and filtration and is tightly connected; The lower end of protection sleeve is connected with standby addition end, in order to increasing new parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008832 CN1563669A (en) | 2004-03-22 | 2004-03-22 | Pump drawing type formation tester through cased hole cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410008832 CN1563669A (en) | 2004-03-22 | 2004-03-22 | Pump drawing type formation tester through cased hole cable |
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| Publication Number | Publication Date |
|---|---|
| CN1563669A true CN1563669A (en) | 2005-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410008832 Pending CN1563669A (en) | 2004-03-22 | 2004-03-22 | Pump drawing type formation tester through cased hole cable |
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| CN (1) | CN1563669A (en) |
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| CN101575971B (en) * | 2009-06-01 | 2013-04-24 | 中国海洋石油总公司 | Stratum tester |
| CN103174414A (en) * | 2013-03-26 | 2013-06-26 | 中国地质调查局水文地质环境地质调查中心 | Sampling device for well-inside in-situ fluid in deep well |
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| CN103321630A (en) * | 2013-07-19 | 2013-09-25 | 西安精实信石油科技开发有限责任公司 | Simulation well for wireline formation test of cased well |
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| CN103321630A (en) * | 2013-07-19 | 2013-09-25 | 西安精实信石油科技开发有限责任公司 | Simulation well for wireline formation test of cased well |
| CN103790578A (en) * | 2013-10-11 | 2014-05-14 | 郑州宜源翔石油科技有限公司 | Water hydraulic modular wireline formation tester |
| CN104373120A (en) * | 2014-11-28 | 2015-02-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN104373120B (en) * | 2014-11-28 | 2017-01-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN105134192A (en) * | 2015-08-23 | 2015-12-09 | 邱万成 | Electronically controlled formation test method and formation tester used by same |
| CN105134192B (en) * | 2015-08-23 | 2018-12-21 | 邱万成 | A kind of automatically controlled formation tester |
| CN107780912A (en) * | 2016-08-31 | 2018-03-09 | 中国石油天然气股份有限公司 | Cased well fracturing liquid discharging method and system |
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| CN107780912B (en) * | 2016-08-31 | 2020-08-11 | 中国石油天然气股份有限公司 | Cased well fracturing fluid drainage method and system |
| CN110454142A (en) * | 2019-05-23 | 2019-11-15 | 王恒 | A kind of cable transmission underground LR laser raman testing tool |
| CN113969783A (en) * | 2020-07-23 | 2022-01-25 | 中国石油天然气股份有限公司 | Underground fluid stratified sampling system and stratified sampling method |
| CN113969783B (en) * | 2020-07-23 | 2024-03-26 | 中国石油天然气股份有限公司 | Downhole fluid stratified sampling system and stratified sampling method |
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