WDRSS

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What develop difficulty as oil field exploration is ceaseless increase, the amount of well of the big displacement well that is aimed at oil deposit character especially, Sunday run level is added gradually much, traditional artesian well pattern cannot have satisfied the requirement that oil field develops, use rotate technology of oriented artesian well undertakes oil deposit development has made a kind of trend. Rotate system of oriented artesian well is average measure system, oriented control system, oriented actuator by the data below system of communication of ground supervisory system, power supply, well 5 much are formed. Direct among them control system and oriented actuator are inseparable, no matter the ground is artificial,the closed circuit below the well is gotten into the joint action that should rely on both to finish, the well that they are unifinication of height of a machine, report, fluid lays a tool, the structure is complex, operating mode is mixed, susceptive load is complex, its function and life decide to rotate directly the actor bad of oriented system, it is to rotate system of oriented artesian well most the part of core. Rotate the action principle cent of tool of oriented artesian well leans to push type and point to type. Push rely on type to direct actuator is apart from broach closer, bring to bear on to broach directly side force, broach changes contrail of well key point then in layer of cutting of the side direction below the action of side force. Push rely on type to rotate oriented tool directs according to its whether actuator rotates with synchronism of upside drill string, can divide again push to rotate lean type and still push rely on type 2 kinds. The broach of oriented actuator distance that points to type is further, can make join the bottom drill string of broach or flexible lever bends, bring about broach front and axes of well key point to produce a dip, bit pressure adopts bottom drill string or flexible lever is added in broach to point to direction directly, complete oriented work then. Domestic each research organization thinks development is pushed generally rely on type to rotate oriented actuator obtains technical breakthrough relatively easily, drilling engineering company gets academy of well project technology to develop a WDRSS-I western model still push rely on type to rotate oriented control system and actuator, the article undertakes discussing to its. 1 job principle and main structure 1.

WDRSS-I of 1 job principle still push rely on type to rotate full installation is in oriented control system and actuator on 1 paragraph of canisters outside following what upside drill string rotates, if pursue,1 is shown. Oriented actuator is mixed by hydraulic pressure module direct costal region board is formed, among them the hydraulic pressure system that hydraulic pressure module is independence, share 3, zhou Xiangjun divide evenly distributings to go up in the canister outside rotating. Control system controls different hydraulic pressure module to generate specific pressure, the piston on hydraulic pressure module is driven direct costal region board is pushed rely on wall of a well. Outside rotating below the action of attrition force the canister does not rotate along with drill string, in the meantime, the counterforce of wall of a well will produce join forces of a side force to broach. The hydraulic pressure muscularity that presses module through controlling 3 fluid is small, can control the size of join forces and direction, control artesian well direction thereby. After hydraulic pressure module quits the job, in its external direct costal region board reclaims, hydraulic pressure module piston pressing is answered former. 1.

System of 2 oriented control controls a system to install the canister outside rotating to go up, those who be located in hydraulic pressure module is left. If the graph is shown 2 times,its component and interior concern, by 1 advocate control a circuit board, power supply drive board of administrative board and 3 electric machinery is formed. Power source management board receive rotate electric energy of oriented system distributive, course commutation, allocate, press sensor of module of module electric machinery, hydraulic pressure for fluid respectively, advocate dominate circuit board and electric machinery the electric energy that drive board provides poor dissimilation. Advocate accuse circuit board interior to be written rotate oriented control force allocates software and computation of orbit deviation vector to analyse software, can calculate automatically according to the data of contrail of well key point of exterior input the deviation circumstance of contrail of well key point, or the interpose statement that sends according to the ground, code corresponding control dictates, send drive of 3 electric machinery board. Electric machinery drive board the rotate speed of control and the electric machinery of hydraulic pressure module that its answer relatively, control module of 3 hydraulic pressure to generate different fluid pressure then. Pool efforts of strength of 3 hydraulic pressure forms specific direction and bulk push lean power. The process is here medium, electric machinery drive board the pressure signal that receives pressure sensor of signal of electric machinery feedback and interior of hydraulic pressure module in real time, the pressure that will receive and rotate speed signal are sent through CAN communication advocate accuse circuit board. Advocate the pressure that controls circuit board basis to feedback and rotate speed information come whether does the statement that test and verify issues get correct execution, and job of hydraulic pressure module is smooth. 1.

3 oriented actuator 1.

3.

Module of 1 hydraulic pressure directs actuator is mixed by hydraulic pressure module direct costal region board is formed, hydraulic pressure module is the hydraulic pressure system that controls force and annulus pneumatics power within drill string independently. If the graph is shown 3 times, interior of hydraulic pressure module sets group of electric machinery, hydraulic pump, valve, sensor, pressure to amend equipment and the structure such as crock of fluid of system, job. When hydraulic pressure module works, electric machinery drives hydraulic pump to enter hydraulic pressure oil pump working fluid crock, the valve group inside working fluid crock makes hydraulic pressure oil generates constant pressure, oil of belt pressing hydraulic pressure drives a piston to extend, sensor measures the actuating pressure inside the crock that get juice. As a result of the limitation of dimension of well key point, total volume of hydraulic pressure module is very minor. Accordingly, the main difficult point of hydraulic pressure module depends on needing actuator of equipment of the hydraulic pressure pipeline of will whole inside limited space circulatory system, electron, hydraulic pressure to wait for equitable distribution, and should assure the integral intensity of hydraulic pressure module and sealed ability; And finish electric machinery power supply cord, electric machinery even of suddenly Er line, sensor line decorate reach hydraulic pressure module of exterior test aperture decorate, hydraulic pressure module and the circuit join that control a system and device of compensation of sealed, pressure; In addition, the working environment of severe below the well exacting issues hydraulic pressure module (125 ～ the high strenth vibration of the high pressure of ａ of the high temperature of 175 ℃ , 138 MP, 20 ｇ ) raised taller requirement to the function of hydraulic pressure module. The other subsystem with oriented to rotating photograph of hydraulic pressure module or spare parts are a structure degree of unifinication of fluid of the most complex, Electromechanical is highest, fragile a most structure, because the function of module of this hydraulic pressure and life are direct the decision is whole rotate the working performance of oriented system. 1.

3.

2 direct costal region board directs costal region hardens compose is shown 1 times like the graph, installation is on the canister outside rotating, be located in fluid to control the side outside module, action is to protect hydraulic pressure module to be pushed directly rely on wall of a well, bear the counterforce of wall of a well and attrition force, contain on its reclaim automatically device, when hydraulic pressure module quits the job costal region board reclaims and hydraulic pressure module piston pressing answers initiative position. Because direct costal region board bears the attrition force of wall of a well, because this needs to mount 1 group of hard metal in the side outside its piece, direct in order to assure of costal region board fight grind ability and working life. After experiment of 2 indoor adjustment is finishing the design of system of WDRSS-I oriented control and actuator and treatment job, undertook associated debugging to its indoors. Indoor adjustment divides 2 paces: The 1st pace undertakes those who control system and module of individual hydraulic pressure debug, the main purpose of the experiment is parameter of the working state that checks hydraulic pressure module, job, detect the problem that hydraulic pressure module may exist; The 2nd pace undertakes controlling the adjustment of system and whole and oriented actuator, the purpose is module of 3 test control system, hydraulic pressure and oriented costal region board linkage circumstance, detect oriented actuator whether can successful postpone action of statement leaning power according to what control a system to be set beforehand. 2.

The indoor adjustment of 1 control system and module of individual hydraulic pressure 2.

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The means of test of indoor test program of module of 1 individual hydraulic pressure is shown 4 times like the graph, the electric machinery power supply cord with hydraulic pressure derivative module, Huoer power supply cord of line, sensor and line receive the electric machinery in controlling a system on drive board. Mix PC advocate accuse join with CAN box between circuit board, so that have two-way news report, be controlled through PC and monitor situation of job of hydraulic pressure module. In be control system through PC machine advocate accuse circuit board to appoint some rotate speed, advocate accuse circuit board to dominate electric machinery drive board drives the electric machinery in hydraulic pressure module to rotate, because the hydraulic pump in hydraulic pressure module is mensurable pump, because this is in the condition with certain rotate speed, pumpage immediately is affirmatory, experiment indoors all hydraulic pressure module in the process all use unified hydraulic pressure oil. Accordingly, affirmatory pumpage can decide the actuating pressure of hydraulic pressure module, in actuating pressure and piston cut area foregone circumstance leaves the bulk that can get pushing leaning power. PC monitoring interface can be passed to monitor the feedback information such as wave motion of rotate speed of value of pressure of hydraulic pressure module, electric machinery in real time in experiment process. 2.

1.

Rotate speed of electric machinery of 2 experiments parameter 3000 ｒ / ｍ ｉ ｎ ; Experiment time 2 ｈ ; Experiment medium is 35 ＃ aviation hydraulic oil; Experiment environment: Indoor, normal temperature, in air. 2.

1.

The pressure when module of hydraulic pressure of 3 tests result begins the work is 28 MP ａ , the electric current of exterior power source is 3.

1 A, wave motion of electric machinery rotate speed is 10 ｒ of ± / ｍ ｉ ｎ (show 5 times like the graph) , the voltaic value of value of pressure of hydraulic pressure module and exterior power source is subsequently slow drop, the temperature of hydraulic pressure module is slow rise, pressure of module of the hydraulic pressure after 1 ｈ falls for 21 MP ａ , source current falls for 1.

5 A, temperature of hydraulic pressure module rises from 20 ℃ for 80 ℃ . Later pressure, electric current, temperature all maintains relative stability. 2.

The indoor adjustment of 2 control system and oriented actuator whole is finishing module of individual hydraulic pressure on the foundation of indoor test, control module of 3 system, hydraulic pressure is mixed direct costal region board presses a plan entirely the means of 1 is assembled rise. Join next in PC machine and control system advocate accuse circuit board, control the working parameter of module and state through fluid of PC machine monitoring, observation is oriented at the same time the behavioral condition of costal region board. 2.

2.

1 test program gives through PC machine advocate accuse circuit board to send push join forces leaning power to dictate, advocate after accusing circuit board to receive an instruction, pass inside the oriented force of buy allocates software computation to give the hydraulic pressure power that allots module of 3 hydraulic pressure, next to 3 electric machinery drive board sends relevant statement. Electric machinery drive board the electric machinery of hydraulic pressure module that correspondence dominates after receiving an instruction works, electric machinery drives hydraulic pump pressurization to generate the pressure of need. 2.

2.

2 tests result the instruction glibly that module of each hydraulic pressure can give out according to controlling a system works, the pressure allocation of module of 3 hydraulic pressure in working process is accurate and reasonable, job of electric machinery of interior of hydraulic pressure module is smooth, measures pressure value did not fluctuate considerably phenomenon. As the elapse of experiment time, when fluid pressure occurrence downtrend, control system can increase electric machinery rotate speed automatically, raise hydraulic pump to discharge a quantity to maintain beforehand distributive pressure value. After hydraulic pressure module quits the job, costal region board reclaims smooth, achieve booked test result completely. 3 conclusion 1) adjustment experiments indoors, undertake in normal temperature, air, test result makes clear, oriented control system and actuator achieved expectant design goal completely. 2) to examine further oriented control system is mixed the function of actuator, be close to the operating condition below the well, the high temperature of the high temperature that will have controlling a system next and oscillatory experiment and hydraulic pressure module, high pressure experiments. 3) the pressure that controls module meets the fluid in experiment process to lift and drop of temperature as hydraulic pressure oil, because this need chooses not sensitive to temperature hydraulic pressure oil. CNC Milling