CN103352878A - Supercharging device of formation pressure measurement-while-drilling instrument - Google Patents
Supercharging device of formation pressure measurement-while-drilling instrument Download PDFInfo
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- CN103352878A CN103352878A CN 201310271874 CN201310271874A CN103352878A CN 103352878 A CN103352878 A CN 103352878A CN 201310271874 CN201310271874 CN 201310271874 CN 201310271874 A CN201310271874 A CN 201310271874A CN 103352878 A CN103352878 A CN 103352878A
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Abstract
The invention discloses a supercharging device of a formation pressure measurement-while-drilling instrument. The supercharging device comprises a center shaft (1) as well as a testing connector I (2), a supercharging structure and a testing connector II (3) which are nested at the outer part of the center shaft (1) sequentially, wherein the supercharging structure comprises a casing (4) and at least one supercharging piston (5); outer walls of a large-diameter section and a small-diameter section of the supercharging piston (5) are tightly matched with an inner wall of the casing (4), and inner walls of the large-diameter section and the small-diameter section of the supercharging piston (5) are tightly matched with the center shaft (1); and the supercharging piston (5) separates the interior of the casing (4) into a low-pressure cylinder (6) and a high-pressure cylinder (7) which is filled with hydraulic oil. The supercharging device has the benefits as follows: lower slurry differential pressure inside and outside a drill column can be converted into high hydraulic pressure, power is provided for the formation pressure measurement-while-drilling instrument, the problem of larger dependence on an underground turbine generator is solved, larger hydraulic pressure can be obtained in a multistage supercharging manner, the use range is widened, and the supercharging device is simple in structure, reliable in work and long in service life.
Description
Technical field
The present invention relates to petroleum drilling engineering supercharging device technical field, particularly a kind of with boring strata pressure surveying instrument supercharging device.
Background technique
Stratum (hole) pressure is one of important basic data of oil and gas well drilling engineering and reservoir geology engineering, predicts exactly and monitor strata pressure, has extremely important function and significance for exploration, exploitation and the drilling engineering of oil.The direct mode of certain parameter of Obtaining Accurate or data is direct measurement, although the drilling technology staff development various drill stem testing technology and wireline test technology, but test is to carry out after stopping boring, because the stratum is subject to drilling fluid contamination, often there is certain deviation in measured strata pressure, and in high angle hole/horizontal well, use the traditional cable logging tool to carry out that formation pressure test is extremely consuming time, cost is high, also there are the potential risks such as instrument servant difficulty.For this reason, on the basis of traditional cable measuring technology, the drilling technology personnel propose measuring while drilling strata pressure in the process of drilling well again, namely adopt with boring strata pressure surveying instrument (Formation Pressure While Drilling, FPWD), this instrument is connected to bottomhole assembly (Bottom Hole Assembly, BHA) in, together be lowered to or trip out well with drill string, owing to being to open the test that oil-gas layer is carried out in early days at brill with boring the strata pressure surveying instrument, it is less that the stratum is subjected to the impact of the factors such as wellbore fluids during test, the strata pressure that records is truer, has so just well solved the strata pressure error large, test length consuming time, cost is high, there is hysteresis quality, instrument is lowered to a series of difficulty and the difficult problems such as difficulty.Yet, because the required power of strata pressure surveying instrument actuator is larger with boring, the generated output of downhole generator in the electric-motor pump hydraulic solution etc. is had relatively high expectations, and domestic down-hole turbogenerator also is difficult to satisfy at present, the Chen Ping of Southwest Petrol University for this reason, the propositions such as Huang Wanzhi adopt the drill string inside and outside differential pressure to provide power for hydraulic system, be that the slurry power formula is with boring the strata pressure surveying instrument, yet because the drill string inside and outside differential pressure is relatively low, can't be directly as hydraulic power supply, therefore, need to design the supercharging device that pressure reduction is converted to hydraulic power supply.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of and adopt the slurry power formula, can obtain higher hydraulic pressure, satisfy different Boost-Pressure-Desireds with boring strata pressure surveying instrument supercharging device.
Purpose of the present invention is achieved through the following technical solutions: a kind of with boring strata pressure surveying instrument supercharging device, it comprises the central shaft of open circles column type and is set in successively the test splice I of central shaft outside, pressure structure and test joint II, described pressure structure comprises that housing and at least one are arranged in the housing, be set in the charged piston of central shaft outside, the end of test splice I closely is set in the central shaft outside, the other end of test splice I closely connects an end of housing, the end of the tight connecting test joint of the other end of housing II, the other end of test joint II closely is set in the central shaft outside, charged piston has large footpath section and the path section that connects successively, the inwall of housing is the ladder-type that cooperates with charged piston, the large footpath section of charged piston is positioned at the major diameter inner wall section of housing, the path section of charged piston is positioned at the minor diameter inner wall section of housing, the large footpath section of charged piston and the outer wall of path section all closely cooperate with inner walls, the large footpath section of charged piston and the inwall of path section all closely cooperate with central shaft, charged piston is divided into the low pressure (LP) cylinder that is positioned at the section end face outside, large footpath and the high-pressure cylinder that is positioned at the path section end face outside with enclosure interior, being full of in the high-pressure cylinder has hydraulic oil, the end of housing major diameter inner wall section is provided with the pressure relief vent that is communicated with enclosure interior and outside, is provided with the inlet that is communicated with test splice I inside and test splice I outside on test splice I and the close-fitting end face of central shaft.
Described enclosure interior is provided with a charged piston, described housing comprises low pressure mud cylinder housing and the pressurizing cylinder cylinder body that is threaded connection, low pressure mud cylinder housing closely is connected with test splice I by screw thread, the pressurizing cylinder cylinder body closely is connected with test joint II by screw thread, the internal diameter of low pressure mud cylinder housing is greater than the internal diameter of pressurizing cylinder cylinder body, the large footpath section of charged piston is positioned at low pressure mud cylinder housing, the path section of charged piston is positioned at the pressurizing cylinder cylinder body, pressure relief vent is arranged on the sidewall that low pressure mud cylinder housing is positioned at pressurizing cylinder cylinder upper end face top, the end face of the large footpath section of charged piston and test splice I and outer casing inner wall form low pressure mud fluid cylinder, the path section end face of charged piston and pressurizing cylinder cylinder body and test joint II form pressurizing cylinder, and being full of in the pressurizing cylinder has hydraulic oil.
Between the joint of described low pressure mud cylinder housing and pressurizing cylinder cylinder body, between the joint of low pressure mud cylinder housing and test splice I, be provided with the O RunddichtringO between the joint of pressurizing cylinder cylinder body and test joint II, take the residing end of test splice I as upper, edge direction from top to bottom is disposed with seal ring and BS RunddichtringO between test joint II and the central shaft, edge direction from top to bottom is disposed with wear ring between the outer surface of the large footpath section of charged piston and the internal surface of low pressure mud cylinder housing, hole lattice Lay ring and wear ring, edge direction from top to bottom is disposed with BS RunddichtringO and wear ring between the internal surface of the large footpath section of charged piston and the outer surface of central shaft; Edge direction from top to bottom is disposed with dust ring, BS RunddichtringO, wear ring and BS RunddichtringO between the outer surface of the path section of charged piston and the internal surface of pressurizing cylinder cylinder body, and edge direction from top to bottom is disposed with wear ring and BS RunddichtringO between the internal surface of the path section of charged piston and the outer surface of central shaft.
Described enclosure interior is provided with two charged pistons, described housing comprises by screw thread successively close-connected low pressure mud cylinder housing, the pressurizing cylinder cylinder body, one-level pressurized cylinder housing and two-stage supercharging cylinder block, low pressure mud cylinder housing closely is connected with test splice I by screw thread, the two-stage supercharging cylinder block closely is connected with test joint II by screw thread, the internal diameter of low pressure mud cylinder housing is greater than the internal diameter of pressurizing cylinder cylinder body, the large footpath section of the one-level charged piston in two charged pistons is positioned at low pressure mud cylinder housing, the path section of one-level charged piston is positioned at the pressurizing cylinder cylinder body, pressure relief vent is arranged on the sidewall that low pressure mud cylinder housing is positioned at pressurizing cylinder cylinder upper end face top, the end face of the large footpath section of one-level charged piston and test splice I and outer casing inner wall formation low pressure mud fluid cylinder; The internal diameter of one-level pressurized cylinder housing is greater than the internal diameter of two-stage supercharging cylinder block, the large footpath section of the two-stage supercharging piston in two charged pistons is positioned at one-level pressurized cylinder housing, the path section of two-stage supercharging piston is positioned at the two-stage supercharging cylinder block, pressure relief vent is arranged on the sidewall that one-level pressurized cylinder housing is positioned at pressurizing cylinder cylinder upper end face top, end face and the pressurizing cylinder cylinder body of the large footpath section of charged piston, the path section end face of one-level pressurized cylinder housing and one-level charged piston forms pressurizing cylinder, the path section end face of charged piston and two-stage supercharging cylinder block and test joint II form the two-stage supercharging oil cylinder, and being full of in pressurizing cylinder and the two-stage supercharging oil cylinder has hydraulic oil.
Between the joint of described low pressure mud cylinder housing and pressurizing cylinder cylinder body, between the joint of low pressure mud cylinder housing and test splice I, between the joint of pressurizing cylinder cylinder body and one-level pressurized cylinder housing, between the joint of one-level pressurized cylinder housing and two-stage supercharging cylinder block, be provided with the O RunddichtringO between the joint of two-stage supercharging cylinder block and test joint II, take the residing end of test splice I as upper, edge direction from top to bottom is disposed with seal ring and BS RunddichtringO between test joint II and the central shaft, edge direction from top to bottom is disposed with wear ring between the outer surface of the large footpath section of one-level charged piston and the internal surface of low pressure mud cylinder housing, hole lattice Lay ring and wear ring, edge direction from top to bottom is disposed with BS RunddichtringO and wear ring between the internal surface of the large footpath section of one-level charged piston and the outer surface of central shaft; Edge direction from top to bottom is disposed with dust ring, BS RunddichtringO, wear ring and BS RunddichtringO between the outer surface of the path section of one-level charged piston and the internal surface of pressurizing cylinder cylinder body, and edge direction from top to bottom is disposed with wear ring and BS RunddichtringO between the internal surface of the path section of one-level charged piston and the outer surface of central shaft; Edge direction from top to bottom is disposed with wear ring, hole lattice Lay ring and wear ring between the outer surface of the large footpath section of two-stage supercharging piston and the internal surface of one-level pressurized cylinder housing, and edge direction from top to bottom is disposed with BS RunddichtringO and wear ring between the internal surface of the large footpath section of two-stage supercharging piston and the outer surface of central shaft; Edge direction from top to bottom is disposed with dust ring, BS RunddichtringO, wear ring and BS RunddichtringO between the outer surface of the path section of two-stage supercharging piston and the internal surface of two-stage supercharging cylinder block, and edge direction from top to bottom is disposed with wear ring and BS RunddichtringO between the internal surface of the path section of two-stage supercharging piston and the outer surface of central shaft.
The present invention has the following advantages: the supercharging device with enhancing power in the brill strata pressure surveying instrument that the invention provides a kind of slurry power formula, this supercharging device can be converted to high pressure with low pressure, thereby for providing power with boring the strata pressure surveying instrument, this device also can be used for other need to provide by mud various downhole tools or the instrument of power, applicability is strong, applied range.This device solves electric-motor pump with boring the strata pressure surveying instrument problem larger to the down-hole turbogenerator dependence, adopt the slurry power formula with after boring strata pressure surveying instrument scheme, the down-hole turbogenerator generated output is required significantly to reduce.
The present invention can be converted to required high-pressure and hydraulic with mud pressure reduction inside and outside the lower drill string, thereby for providing the hydraulic power of mechanism action with boring the strata pressure measuring device; The present invention is after adopting the multi-stage booster mode to carry out supercharging, can obtain higher hydraulic pressure, also just can satisfy the demand of different boost pressures, widened the using scope of supercharging device, needing can be used for that high-pressure promotes with boring the various downhole tools such as instrument, drilling tool, oil tool; The present invention is simple in structure, reliable operation, long service life.
The technological scheme that anti-abration structure of the present invention and sealing configuration are equipped with can be stablized effectively operation by assurance device, has prolonged simultaneously the working life of device.
Description of drawings
Fig. 1 is structural representation of the present invention
Fig. 2 is the structural representation of charged piston of the present invention when moving to bottom
Fig. 3 is the structural representation of charged piston of the present invention when moving to the neutral position
Fig. 4 is another kind of structural representation of the present invention
Among the figure, 1-central shaft, 2-test splice I, the 3-test joint II, 4-housing, 5-charged piston, the 6-low pressure (LP) cylinder, 7-high-pressure cylinder, 8-pressure relief vent, the 9-inlet, 10-low pressure mud cylinder housing, 11-pressurizing cylinder cylinder body, 12-low pressure mud fluid cylinder, 13-pressurizing cylinder, 14-O RunddichtringO, the 15-BS RunddichtringO, the 16-seal ring, 17-wear ring, 18-hole lattice Lay ring, the 19-dust ring, 20-one-level pressurized cylinder housing, 21-two-stage supercharging cylinder block, 22-one-level charged piston, 23-two-stage supercharging piston, 24-two-stage supercharging oil cylinder.
Embodiment
The present invention will be further described below in conjunction with embodiment and accompanying drawing, and protection scope of the present invention is not limited to the following stated:
Embodiment 1:
As shown in Figure 1, a kind of with boring strata pressure surveying instrument supercharging device, it comprises the central shaft 1 of open circles column type and is set in successively the test splice I2 of central shaft 1 outside, pressure structure and test joint II 3, central shaft 1 upper and lower end is screw thread, be connected in boring on the strata pressure surveying instrument body and realize fixing, described pressure structure comprises that housing 4 and at least one are arranged in the housing 4, be set in the charged piston 5 of central shaft 1 outside, charged piston 5 can be done at central shaft 1 and endwisely slip, the end of test splice I2 closely is set in central shaft 1 outside, the other end of test splice I2 closely connects an end of housing 4, the end of the tight connecting test joint of the other end of housing 4 II3, the other end of test joint II 3 closely is set in central shaft 1 outside, charged piston 5 has large footpath section and the path section that connects successively, the inwall of housing 4 is the ladder-type that cooperates with charged piston 5, the large footpath section of charged piston 5 is positioned at the major diameter inner wall section of housing 4, the path section of charged piston 5 is positioned at the minor diameter inner wall section of housing 4, the large footpath section of charged piston 5 and the outer wall of path section all closely cooperate with housing 4 inwalls, the large footpath section of charged piston 5 and the inwall of path section all closely cooperate with central shaft 1, charged piston 5 is the high-pressure cylinder 7 that is positioned at the low pressure (LP) cylinder 6 in the section end face outside, large footpath and is positioned at the path section end face outside with housing 4 interior separations, be full of in the high-pressure cylinder 7 hydraulic oil is arranged, the end of housing 4 major diameter inner wall sections is provided with the pressure relief vent 8 that is communicated with inner and housing 4 outsides of housing 4, is provided with the inlet 9 that is communicated with test splice I2 inside and test splice I2 outside on test splice I2 and the central shaft 1 close-fitting end face.
Described housing 4 inside are provided with a charged piston 5, described housing 4 comprises low pressure mud cylinder housing 10 and the pressurizing cylinder cylinder body 11 that is threaded connection, low pressure mud cylinder housing 10 closely is connected with test splice I2 by screw thread, pressurizing cylinder cylinder body 11 closely is connected with test joint II 3 by screw thread, the internal diameter of low pressure mud cylinder housing 10 is greater than the internal diameter of pressurizing cylinder cylinder body 11, the large footpath section of charged piston 5 is positioned at low pressure mud cylinder housing 10, the path section of charged piston 5 is positioned at pressurizing cylinder cylinder body 11, and pressure relief vent 8 is arranged on the sidewall that low pressure mud cylinder housing 10 is positioned at pressurizing cylinder cylinder body 11 upper-end surfaces tops.The end face of the large footpath section of charged piston 5 and test splice I2 and outer casing inner wall form low pressure mud fluid cylinder 12, and the path section end face of charged piston 5 and pressurizing cylinder cylinder body 11 and test joint II 3 form pressurizing cylinder 13, and being full of in the pressurizing cylinder 13 has hydraulic oil.
Between the joint of described low pressure mud cylinder housing 10 and pressurizing cylinder cylinder body 11, between the joint of low pressure mud cylinder housing 10 and test splice I2, be provided with O RunddichtringO 14 between the joint of pressurizing cylinder cylinder body 11 and test joint II 3,
Take the residing end of test splice I2 as upper, edge direction from top to bottom is disposed with seal ring 16 and BS RunddichtringO 15 between test joint II 3 and the central shaft 1,
Edge direction from top to bottom is disposed with wear ring 17, hole lattice Lay ring 18 and wear ring 17 between the outer surface of the large footpath section of charged piston 5 and the internal surface of low pressure mud cylinder housing 10, and edge direction from top to bottom is disposed with BS RunddichtringO 15 and wear ring 17 between the internal surface of the large footpath section of charged piston 5 and the outer surface of central shaft 1; Edge direction from top to bottom is disposed with dust ring 19, BS RunddichtringO 15, wear ring 17 and BS RunddichtringO 15 between the outer surface of the path section of charged piston 5 and the internal surface of pressurizing cylinder cylinder body 11, and edge direction from top to bottom is disposed with wear ring 17 and BS RunddichtringO 15 between the internal surface of the path section of charged piston 5 and the outer surface of central shaft 1; Can realize sealing at the fluid cylinder at central shaft 1 and charged piston 5 contact gap place packing charged pistons 5 two ends after BS RunddichtringO 15 is installed, can reduce charged piston 5 behind the installation wear ring 17 and rub in axial sliding, thereby can effectively improve the life-span; Preferably, cylinder seal spare is selected Paker inlet seal spare, and its surface friction drag is little, and temperature resistance is good.
The working procedure of the present embodiment comprises pressurization and pressure leak process, the mud that distributes with brill strata pressure surveying instrument upper end part flow arrangement enters low pressure mud fluid cylinder 12 by inlet 9, be that mud is communicated with in mud and the drill string in the low pressure mud fluid cylinder 12, and be the fixing hydraulic oil of volume in the pressurizing cylinder 13, the hydraulic piston upper and lower end face is amassed and is respectively S
l, S
h, mud pressure is done the time spent, under hydraulic piston upper and lower end hydraulic pressure, by equilibrium of forces principle P as can be known
mS
l=P
oS
hWherein: P
mBe mud pressure, P
oBe hydraulic fluid pressure, S
lFor the piston large end face amasss, S
hBe piston small end area, therefore, because the area at described charged piston 5 two ends is different, at the different mud pressure of charged piston 5 upper end low pressure mud fluid cylinder 12 interior inputs, just can export different hydraulic pressures in charged piston 5 lower end high pressure liquid cylinder pressures, definition pressure ratio n is the ratio n=P of high-pressure cylinder 7 pressure and low pressure (LP) cylinder 6 pressure
o/ P
m=S
l/ S
h, beginning during supercharging charged piston 5 be in upper working state upper end shown in Figure 1, the pressurized effect of this pressure structure when charged piston 5 moves to the next working state shown in Figure 2 and is the lower end is best, can obtain the boost pressure of maximum.
Described supercharging device can not pressurize after strata pressure measure to finish, need to lay down high pressure, easily cause seal failure under the hyperbaric environment because sealing configuration is in for a long time, thereby affect the global reliability of strata pressure surveying instrument, therefore test just needs to carry out pressure release after finishing.This process is pressure release recovery process, after formation pressure test finishes, fluid pressure in the low pressure mud fluid cylinder 12 is because the upper end causes pressure decreased with the unlatching of closing with the annular space Decompression valves of boring strata pressure surveying instrument shunt, and the lower end high pressure liquid cylinder pressure of supercharging device acts on the active force of piston greater than the thrust of upper end low pressure mud fluid cylinder 12, so that charged piston 5 is moved upward by the next working state shown in Figure 3, charged piston 5 moves to working state shown in Figure 1 after pressure release finishes, and namely returns to reset condition.
Embodiment 2:
As mentioned above, in the low pressure mud fluid cylinder 12 of the large end in described charged piston 5 upper ends, apply mud pressure reduction inside and outside the drill string, in the high pressure liquid cylinder pressure of described charged piston 5 lower end small ends, be full of hydraulic oil liquid force feed volume and be slightly less than hydraulic oil action space volume, then according to the mechanical equilibrium principle, pressure in the described charged piston 5 lower end high pressure liquid cylinder pressures and the ratio of upper end low pressure mud fluid cylinder 12 internal pressures are described charged piston 5 upper and lower end area ratios, can determine rational charged piston 5 sizes according to required boost pressure in actual the use.In actual the use, often need higher boost pressure, the meeting of the single size raising boost pressure that passes through the adjusting supercharging causes the remitted its fury of supercharging device, thereby can't the reliable and stable work in the down-hole, for this reason, can adopt the mode of multi-stage booster to carry out supercharging, multi-stage booster is connected the described supercharging device of Fig. 1 exactly, series connection progression is supercharging progression, and supercharging progression is more, thereby can obtain higher boost pressure.
As shown in Figure 4, a kind of with boring strata pressure surveying instrument supercharging device for the two-step supercharging formula, it comprises the central shaft 1 of open circles column type and is set in successively the test splice I2 of central shaft 1 outside, pressure structure and test joint II 3, central shaft 1 upper and lower end is screw thread, be connected in boring on the strata pressure surveying instrument body and realize fixing, described pressure structure comprises that housing 4 and at least one are arranged in the housing 4, be set in the charged piston 5 of central shaft 1 outside, charged piston 5 can be done at central shaft 1 and endwisely slip, the end of test splice I2 closely is set in central shaft 1 outside, the other end of test splice I2 closely connects an end of housing 4, the end of the tight connecting test joint of the other end of housing 4 II3, the other end of test joint II 3 closely is set in central shaft 1 outside, charged piston 5 has large footpath section and the path section that connects successively, the inwall of housing 4 is the ladder-type that cooperates with charged piston 5, the large footpath section of charged piston 5 is positioned at the major diameter inner wall section of housing 4, the path section of charged piston 5 is positioned at the minor diameter inner wall section of housing 4, the large footpath section of charged piston 5 and the outer wall of path section all closely cooperate with housing 4 inwalls, the large footpath section of charged piston 5 and the inwall of path section all closely cooperate with central shaft 1, charged piston 5 is the high-pressure cylinder 7 that is positioned at the low pressure (LP) cylinder 6 in the section end face outside, large footpath and is positioned at the path section end face outside with housing 4 interior separations, be full of in the high-pressure cylinder 7 hydraulic oil is arranged, the end of housing 4 major diameter inner wall sections is provided with the pressure relief vent 8 that is communicated with inner and housing 4 outsides of housing 4, is provided with the inlet 9 that is communicated with test splice I2 inside and test splice I2 outside on test splice I2 and the central shaft 1 close-fitting end face.
Described housing 4 inside are provided with two charged pistons 5, described housing 4 comprises by screw thread successively close-connected low pressure mud cylinder housing 10, pressurizing cylinder cylinder body 11, one-level pressurized cylinder housing 20 and two-stage supercharging cylinder block 21, low pressure mud cylinder housing 10 closely is connected with test splice I2 by screw thread, two-stage supercharging cylinder block 21 closely is connected with test joint II 3 by screw thread, the internal diameter of low pressure mud cylinder housing 10 is greater than the internal diameter of pressurizing cylinder cylinder body 11, the large footpath section of the one-level charged piston 22 in two charged pistons 5 is positioned at low pressure mud cylinder housing 10, the path section of one-level charged piston 22 is positioned at pressurizing cylinder cylinder body 11, pressure relief vent 8 is arranged on the sidewall that low pressure mud cylinder housing 10 is positioned at pressurizing cylinder cylinder body 11 upper-end surfaces tops, the end face of the large footpath section of one-level charged piston 22 and test splice I2 and outer casing inner wall formation low pressure mud fluid cylinder 12;
The internal diameter of one-level pressurized cylinder housing 20 is greater than the internal diameter of two-stage supercharging cylinder block 21, the large footpath section of the two-stage supercharging piston 23 in two charged pistons 5 is positioned at one-level pressurized cylinder housing 20, the path section of two-stage supercharging piston 23 is positioned at two-stage supercharging cylinder block 21, pressure relief vent 8 is arranged on the sidewall that one-level pressurized cylinder housing 20 is positioned at pressurizing cylinder cylinder body 11 upper-end surfaces tops, end face and the pressurizing cylinder cylinder body 11 of the large footpath section of charged piston 5, the path section end face of one-level pressurized cylinder housing 20 and one-level charged piston 22 forms pressurizing cylinder 13, the path section end face of charged piston 5 and two-stage supercharging cylinder block 21 and test joint II 3 form two-stage supercharging oil cylinder 24, and being full of in pressurizing cylinder 13 and the two-stage supercharging oil cylinder 24 has hydraulic oil.
Between the joint of described low pressure mud cylinder housing 10 and pressurizing cylinder cylinder body 11, between the joint of low pressure mud cylinder housing 10 and test splice I2, between the joint of pressurizing cylinder cylinder body 11 and one-level pressurized cylinder housing 20, between the joint of one-level pressurized cylinder housing 20 and two-stage supercharging cylinder block 21, be provided with O RunddichtringO 14 between the joint of two-stage supercharging cylinder block 21 and test joint II 3
Take the residing end of test splice I2 as upper, edge direction from top to bottom is disposed with seal ring 16 and BS RunddichtringO 15 between test joint II 3 and the central shaft 1,
Edge direction from top to bottom is disposed with wear ring 17, hole lattice Lay ring 18 and wear ring 17 between the outer surface of the large footpath section of one-level charged piston 22 and the internal surface of low pressure mud cylinder housing 10, and edge direction from top to bottom is disposed with BS RunddichtringO 15 and wear ring 17 between the internal surface of the large footpath section of one-level charged piston 22 and the outer surface of central shaft 1; Edge direction from top to bottom is disposed with dust ring 19, BS RunddichtringO 15, wear ring 17 and BS RunddichtringO 15 between the outer surface of the path section of one-level charged piston 22 and the internal surface of pressurizing cylinder cylinder body 11, and edge direction from top to bottom is disposed with wear ring 17 and BS RunddichtringO 15 between the internal surface of the path section of one-level charged piston 22 and the outer surface of central shaft 1; After being installed, BS RunddichtringO 15 can realize sealing at the fluid cylinder at central shaft 1 and one-level charged piston 22 contact gap place packing charged pistons 5 two ends, can reduce one-level charged piston 22 behind the installation wear ring 17 and rub in axial sliding, thereby can effectively improve the life-span;
Edge direction from top to bottom is disposed with wear ring 17, hole lattice Lay ring 18 and wear ring 17 between the outer surface of the large footpath section of two-stage supercharging piston 23 and the internal surface of one-level pressurized cylinder housing 20, and edge direction from top to bottom is disposed with BS RunddichtringO 15 and wear ring 17 between the internal surface of the large footpath section of two-stage supercharging piston 23 and the outer surface of central shaft 1; Edge direction from top to bottom is disposed with dust ring 19, BS RunddichtringO 15, wear ring 17 and BS RunddichtringO 15 between the outer surface of the path section of two-stage supercharging piston 23 and the internal surface of two-stage supercharging cylinder block 21, and edge direction from top to bottom is disposed with wear ring 17 and BS RunddichtringO 15 between the internal surface of the path section of two-stage supercharging piston 23 and the outer surface of central shaft 1; After being installed, BS RunddichtringO 15 can realize sealing at the fluid cylinder at central shaft 1 and two-stage supercharging piston 23 contact gap place packing charged pistons 5 two ends, can reduce two-stage supercharging piston 23 behind the installation wear ring 17 and rub in axial sliding, thereby can effectively improve the life-span.
The present embodiment is that embodiment's 1 described single-stage boosting device is carried out series design, just can carry out two-step supercharging, the working procedure of the present embodiment is with embodiment 1, if two-step supercharging piston 5 adopts identical size, single stage supercharging delivery pressure supercharging n doubly, then the boost pressure of output will be the n of single stage supercharging, and the boost pressure of namely exporting behind the two-step supercharging is n
2Doubly.
By above-described embodiment as can be known, pressure in the high pressure liquid cylinder pressure of described charged piston lower end and the ratio of upper end low pressure mud fluid cylinder internal pressure are described charged piston upper and lower end area ratio, can determine rational charged piston size according to required boost pressure in actual the use.In addition, described supercharging device also can adopt the mode of multi-stage booster to carry out supercharging, and supercharging progression is more, can obtain higher boost pressure, the large small end hydraulic pressure of charged piston area is different, exports than the higher pressure of low pressure mud fluid cylinder at described charged piston small end.It is higher that the more superchargings of series connection progression obtain hydraulic pressure, the boost pressure of exporting behind the n level series boosting be single stage supercharging the n power doubly.
Claims (5)
1. one kind with boring strata pressure surveying instrument supercharging device, it is characterized in that: it comprises the central shaft (1) of open circles column type and is set in successively the outside test splice I(2 of central shaft (1)), pressure structure and test joint II (3), described pressure structure comprises that housing (4) and at least one are arranged in the housing (4), be set in the outside charged piston (5) of central shaft (1), test splice I(2) a end closely is set in central shaft (1) outside, test splice I(2) the other end closely connects an end of housing (4), the tight connecting test joint of the other end II(3 of housing (4)) a end, the other end of test joint II (3) closely is set in central shaft (1) outside, charged piston (5) has large footpath section and the path section that connects successively, the inwall of housing (4) is the ladder-type that cooperates with charged piston (5), the large footpath section of charged piston (5) is positioned at the major diameter inner wall section of housing (4), the path section of charged piston (5) is positioned at the minor diameter inner wall section of housing (4), the large footpath section of charged piston (5) and the outer wall of path section all closely cooperate with housing (4) inwall, the large footpath section of charged piston (5) and the inwall of path section all closely cooperate with central shaft (1), charged piston (5) is the high-pressure cylinder (7) that is positioned at the low pressure (LP) cylinder (6) in the section end face outside, large footpath and is positioned at the path section end face outside with housing (4) interior separation, be full of in the high-pressure cylinder (7) hydraulic oil is arranged, the end of housing (4) major diameter inner wall section is provided with and is communicated with the pressure relief vent (8) that housing (4) is inner and housing (4) is outside, test splice I(2) with the close-fitting end face of central shaft (1) on be provided with is communicated with test splice I(2) inside and test splice I(2) inlet (9) of outside.
2. according to claim 1 a kind of with boring strata pressure surveying instrument supercharging device, it is characterized in that: described housing (4) inside is provided with a charged piston (5), described housing (4) comprises low pressure mud cylinder housing (10) and the pressurizing cylinder cylinder body (11) that is threaded connection, low pressure mud cylinder housing (10) is by screw thread and test splice I(2) closely be connected, pressurizing cylinder cylinder body (11) closely is connected with test joint II (3) by screw thread, the internal diameter of low pressure mud cylinder housing (10) is greater than the internal diameter of pressurizing cylinder cylinder body (11), the large footpath section of charged piston (5) is positioned at low pressure mud cylinder housing (10), the path section of charged piston (5) is positioned at pressurizing cylinder cylinder body (11), pressure relief vent (8) is arranged on the sidewall that low pressure mud cylinder housing (10) is positioned at pressurizing cylinder cylinder body (11) upper-end surface top, end face and the test splice I(2 of the large footpath section of charged piston (5)) and outer casing inner wall formation low pressure mud fluid cylinder (12), the path section end face of charged piston (5) and pressurizing cylinder cylinder body (11) and test joint II (3) form pressurizing cylinder (13), and being full of in the pressurizing cylinder (13) has hydraulic oil.
3. according to claim 2 a kind of with boring strata pressure surveying instrument supercharging device, it is characterized in that: between the joint of described low pressure mud cylinder housing (10) and pressurizing cylinder cylinder body (11), low pressure mud cylinder housing (10) and test splice I(2) joint between, be provided with O RunddichtringO (14) between the joint of pressurizing cylinder cylinder body (11) and test joint II (3), take test splice I(2) a residing end is as upper, edge direction from top to bottom is disposed with seal ring (16) and BS RunddichtringO (15) between test joint II (3) and the central shaft (1), edge direction from top to bottom is disposed with wear ring (17) between the outer surface of the large footpath section of charged piston (5) and the internal surface of low pressure mud cylinder housing (10), hole lattice Lay rings (18) and wear ring (17), edge direction from top to bottom is disposed with BS RunddichtringO (15) and wear ring (17) between the internal surface of the large footpath section of charged piston (5) and the outer surface of central shaft (1); Edge direction from top to bottom is disposed with dust ring (19), BS RunddichtringO (15), wear ring (17) and BS RunddichtringO (15) between the internal surface of the outer surface of the path section of charged piston (5) and pressurizing cylinder cylinder body (11), and edge direction from top to bottom is disposed with wear ring (17) and BS RunddichtringO (15) between the outer surface of the internal surface of the path section of charged piston (5) and central shaft (1).
4. according to claim 1 a kind of with boring strata pressure surveying instrument supercharging device, it is characterized in that: described housing (4) inside is provided with two charged pistons (5), described housing (4) comprises by screw thread successively close-connected low pressure mud cylinder housing (10), pressurizing cylinder cylinder body (11), one-level pressurized cylinder housing (20) and two-stage supercharging cylinder block (21), low pressure mud cylinder housing (10) is by screw thread and test splice I(2) closely be connected, two-stage supercharging cylinder block (21) closely is connected with test joint II (3) by screw thread, the internal diameter of low pressure mud cylinder housing (10) is greater than the internal diameter of pressurizing cylinder cylinder body (11), the large footpath section of the one-level charged piston (22) in two charged pistons (5) is positioned at low pressure mud cylinder housing (10), the path section of one-level charged piston (22) is positioned at pressurizing cylinder cylinder body (11), pressure relief vent (8) is arranged on the sidewall that low pressure mud cylinder housing (10) is positioned at pressurizing cylinder cylinder body (11) upper-end surface top, end face and the test splice I(2 of the large footpath section of one-level charged piston (22)) and outer casing inner wall formation low pressure mud fluid cylinder (12); The internal diameter of one-level pressurized cylinder housing (20) is greater than the internal diameter of two-stage supercharging cylinder block (21), the large footpath section of the two-stage supercharging piston (23) in two charged pistons (5) is positioned at one-level pressurized cylinder housing (20), the path section of two-stage supercharging piston (23) is positioned at two-stage supercharging cylinder block (21), pressure relief vent (8) is arranged on the sidewall that one-level pressurized cylinder housing (20) is positioned at pressurizing cylinder cylinder body (11) upper-end surface top, the end face of the large footpath section of charged piston (5) and pressurizing cylinder cylinder body (11), the path section end face of one-level pressurized cylinder housing (20) and one-level charged piston (22) forms pressurizing cylinder (13), the path section end face of charged piston (5) and two-stage supercharging cylinder block (21) and test joint II (3) form two-stage supercharging oil cylinder (24), and being full of in pressurizing cylinder (13) and the two-stage supercharging oil cylinder (24) has hydraulic oil.
5. according to claim 4 a kind of with boring strata pressure surveying instrument supercharging device, it is characterized in that: between the joint of described low pressure mud cylinder housing (10) and pressurizing cylinder cylinder body (11), low pressure mud cylinder housing (10) and test splice I(2) joint between, between the joint of pressurizing cylinder cylinder body (11) and one-level pressurized cylinder housing (20), between the joint of one-level pressurized cylinder housing (20) and two-stage supercharging cylinder block (21), be provided with O RunddichtringO (14) between the joint of two-stage supercharging cylinder block (21) and test joint II (3), take test splice I(2) a residing end is as upper, edge direction from top to bottom is disposed with seal ring (16) and BS RunddichtringO (15) between test joint II (3) and the central shaft (1), edge direction from top to bottom is disposed with wear ring (17) between the outer surface of the large footpath section of one-level charged piston (22) and the internal surface of low pressure mud cylinder housing (10), hole lattice Lay rings (18) and wear ring (17), edge direction from top to bottom is disposed with BS RunddichtringO (15) and wear ring (17) between the internal surface of the large footpath section of one-level charged piston (22) and the outer surface of central shaft (1); Edge direction from top to bottom is disposed with dust ring (19), BS RunddichtringO (15), wear ring (17) and BS RunddichtringO (15) between the internal surface of the outer surface of the path section of one-level charged piston (22) and pressurizing cylinder cylinder body (11), and edge direction from top to bottom is disposed with wear ring (17) and BS RunddichtringO (15) between the outer surface of the internal surface of the path section of one-level charged piston (22) and central shaft (1); Edge direction from top to bottom is disposed with wear ring (17), hole lattice Lay rings (18) and wear ring (17) between the outer surface of the large footpath section of two-stage supercharging piston (23) and the internal surface of one-level pressurized cylinder housing (20), and edge direction from top to bottom is disposed with BS RunddichtringO (15) and wear ring (17) between the internal surface of the large footpath section of two-stage supercharging piston (23) and the outer surface of central shaft (1); Edge direction from top to bottom is disposed with dust ring (19), BS RunddichtringO (15), wear ring (17) and BS RunddichtringO (15) between the internal surface of the outer surface of the path section of two-stage supercharging piston (23) and two-stage supercharging cylinder block (21), and edge direction from top to bottom is disposed with wear ring (17) and BS RunddichtringO (15) between the outer surface of the internal surface of the path section of two-stage supercharging piston (23) and central shaft (1).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810069A (en) * | 2020-08-04 | 2020-10-23 | 西南石油大学 | Electric control type underground slurry diversion hydraulic power tool and method thereof |
| CN111878035A (en) * | 2020-08-04 | 2020-11-03 | 西南石油大学 | Mechanical underground slurry diversion tool and method |
| CN113833457A (en) * | 2021-09-26 | 2021-12-24 | 西南石油大学 | Actuating mechanism of formation pressure measuring instrument while drilling |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3047243B2 (en) * | 1990-05-23 | 2000-05-29 | 三井精機工業株式会社 | Cylinder with boost mechanism |
| KR100530717B1 (en) * | 2002-03-11 | 2005-11-28 | 주재석 | Pressor cylinder |
| CN201043451Y (en) * | 2007-06-08 | 2008-04-02 | 广汉川油井控装备有限公司 | Hydraulic cylinder supercharging device of blowout preventer |
| CN101403279B (en) * | 2008-11-21 | 2012-05-30 | 李洪敏 | Well bottom booster pump |
| CN201671897U (en) * | 2010-05-12 | 2010-12-15 | 河北华北石油荣盛机械制造有限公司 | Piston-type deep-sea water pressure compensation energy accumulator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810069A (en) * | 2020-08-04 | 2020-10-23 | 西南石油大学 | Electric control type underground slurry diversion hydraulic power tool and method thereof |
| CN111878035A (en) * | 2020-08-04 | 2020-11-03 | 西南石油大学 | Mechanical underground slurry diversion tool and method |
| CN111878035B (en) * | 2020-08-04 | 2021-05-18 | 西南石油大学 | Mechanical underground slurry diversion tool and method |
| CN113833457A (en) * | 2021-09-26 | 2021-12-24 | 西南石油大学 | Actuating mechanism of formation pressure measuring instrument while drilling |
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| CN103352878B (en) | 2015-08-19 |
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