CN2670599Y

CN2670599Y - Rotary stratigraphic tester

Info

Publication number: CN2670599Y
Application number: CNU2003201278882U
Authority: CN
Inventors: 万文江; 王元龙; 王小勇; 庄建山; 余东合; 刘永红; 王希权
Original assignee: OIL-GAS WELL TEST Co HUABEI PETROLEUM ADMINISTRATION
Current assignee: OIL-GAS WELL TEST Co HUABEI PETROLEUM ADMINISTRATION
Priority date: 2003-12-22
Filing date: 2003-12-22
Publication date: 2005-01-12
Anticipated expiration: 2013-12-22

Abstract

A rotary stratigraphic tester relates to an oil well stratigraphic testing control device in oil geological prospecting, which comprises an upper connection, an external cylinder and a lower connecter. The utility model is characterized in that a star wheel is arranged on a star axis, the star wheel, the star axis and a key core axis can be meshed together via a sliding key gear slot, a valve external cylinder is respectively connected with the external cylinder and the star axis via a screw, an operating arm is arranged in the external cylinder inner, and the ball valve is provided with a through hole and an aperture. The round raised head on the operating arm extends into the aperture on the ball valve, the ball valve, a valve seat and a loop are respectively arranged in the valve external cylinder and are connected together via a C-shaped splint, and the lower connecter is provided with the lower end of the valve external cylinder via the screw. The tester can instant measure and sample the formation pressure and the flow data and can satisfy the working request of the testing at the side of the non-self spray pump edge-detecting pumping, and the utility model has convenient operation, labor-saving performance, reliable work and long service life, which can prevent reverse-buckling and reduce accident.

Description

Rotary stratum tester

Technical field

The utility model relates to oil gas well formation testing control device in a kind of petroleum geology exploration.

Background technology

When the oil reservoir EARLY STAGE EVALUATION of petroleum geology exploration, need in pit shaft, to be lowered to tester by oil pipe or drilling rod, utilizing down-hole open and close well mode to control formation fluid flows out or stops, stressor layer wave direction deep diffusion excitedly, and the utilization high-grade pressure gauge writes down the bottom pressure and the flow information data of this change procedure, thereby realize evaluation, for oil-gas exploration, oil reservoir development provide reliable scientific basis to oil reservoir information such as reservoir seepage flow condition, oil reservoir fuel feeding border, stratum elastic energies.Use at present have pressure-controlled and on put two types of down-hole formation testers of the formula of putting, pressure-controlled formation tester, implementation name is called APR-N testing valve and PCT testing valve, be company's exploitations such as U.S. Si Lunbeixie, Halliburton, these testers are open and close well states of suppressing mode control well sub-surface tester by the oil jacket annular space, and its service condition is that the oil jacket annular space must be full of liquid (water or well killing fluid).The MFE tester that U.S. MFE company develops is by well head put-on and delegated test string, the open and close well state of operation down-hole MFE tester, when being operation, its service condition must dismantle well head and manifold of ground, and need the service hoisting power-equipment, when using this tester, carry loose packer easily, cause PRESSURE DATA distortion, test crash.Above-mentioned two types of formation testers all exist drawback in non-blowing pumping well reservoir delineation test construction: the one, and non-blowing pumping well oil jacket annulus liquid level is dark (at well head), annular space is the passage that solution gas discharges earthward, APR, PCT instrument do not possess that voltage-controlled type tool annular space is suppressed, release open and close well operating condition, so can not use when this type of well surveying examination.The 2nd, nonflowing well reservoir delineation test technical essential is that production time of recovering the oil continuously is long, be generally 2-3 month, can measure reservoir depth reservoir boundary information like this, and must be after production stops at instant shut-in, the MFE tester is opened, not only need lifting means to cooperate during the closing well operation, and need dismounting well head and manifold of ground and arrange oil pumper polished rod eye (being commonly called as horse head), lifting sub etc. is installed, these operate in and stop to need 3-4 hour at least after pump is taken out production, can realize operating the down-hole formation tester opens, the closing well operation can't be satisfied the data admission technical requirements that nonflowing well is visited stopping production instant shut-in in the well testing of limit.

The utility model content

The purpose of this utility model provides a kind of easy to use, reliable operation, long rotary stratum tester of life-span, uses it can realize the open and close well state conversion of tester fast, reliably, implements formation testing work.

Technical solution of the present utility model is to realize like this, a kind of rotary stratum tester, being bound up by top connection 1, urceolus 4 and lower contact 23 constitutes, and its special character is: (1) urceolus 4 is enclosed within on the key axle 7, and the upper end of key axle 7 is installed in the top connection 1 by screw thread.(2) spring 9 is sleeved on the lower end of spring base 8, and star-wheel 10 is contained on the star axle 12, and star-wheel 10, star axle 12 and key axle 7 mesh together by the key tooth, and spring base 8 is installed in the upper end of star axle 12 by screw thread.(3) valve urceolus 13 upper ends connect with urceolus 4, star axle 12 respectively mutually by screw thread.(4) have through hole 17 and aperture on ball valve 17 α, motion arm 16 is installed in the valve urceolus 13, and the spherical nose on the motion arm 16 stretches in the aperture on ball valve 17 α.(5) upper valve base 15 is contained in star axle 12 lower ends, and ball valve 17 α, lower valve base 18 and kink 20 are contained in the valve urceolus 13 successively, by C clamp plate 24 they are bound up.(6) lower contact 23 is installed in the lower end of valve urceolus 13 by screw thread.

In above-mentioned technical solution, its special character ring is that (1) is equipped with bearing between top connection 1 lower end and urceolus 4 upper ends.(2) between the step of urceolus 4 and key axle 7, packing ring 5 is housed, between the step of lower valve base 18 and kink 20, disk spring 19 is housed.

The beneficial effects of the utility model are: after (1) this tester is gone into the well with formation testing kit combinations such as rotation well head and bi-directional slip packers, when needs are tested, directly rotate rotating short-knot at well head, in a few minutes, can realize the conversion of downhole testing device open and close state, immediately carry out measuring of strata pressure, flow data, satisfied requirement in the work of non-blowing pumping well reservoir delineation test.(2) use this tester not need other ground power assist apparatus, also do not need to dismantle well head and manifold of ground, can reduce a large amount of service working times.Its operation only needs test string right rotation 2 circles are got final product closing well, and perhaps anticlockwise top connection 2 circles can drive a well, and are easy to operate, laborsaving, reliable operation.(3) but this tester repeated multiple times is carried out open and close well operation, long service life.(4) in the unloading of the white moving realization rotation torque in the back that drives a well, can effectively prevent the back-off of connecting tube string, the minimizing accident takes place.

Description of drawings

Fig. 1 is a cross-sectional view of the present utility model.

Fig. 2 is a ball valve part amplification profile of the present utility model.

Fig. 3 is the formation testing combined string connection diagram that comprises that this tester is formed.

The specific embodiment

" O " RunddichtringO is installed in the seal groove of urceolus 4, urceolus 4 is enclosed within on the key axle 7, sealing ring is housed between them, floor clip 5 is housed between their step, the upper end of key axle 7 is installed in the top connection 1 by screw thread, sealing ring is installed between them, between the upper surface of urceolus 4 and top connection 1, bearing 3 is installed.Be evenly equipped with the vertical featherway of 6-8 bar inside and outside the star-wheel 10, right side, upper end in the keyway projection has chamfering, have on star axle 12, the key axle 7 and star-wheel 10 corresponding vertically featherways, star-wheel 10 is contained between star axle 12, the key axle 7, and they are meshing with each other together by the feather key teeth groove.Spring 9 adopts helical springs, and spring 9 is sleeved on the lower end of spring base 8, and spring base 8 is installed in the upper end of star axle 12 by screw thread, between the top of spring base 8 and the key axle 7 sealing ring 6 is housed.Valve urceolus 13 is installed in the lower end of urceolus 4 by screw thread, and sealing ring 11 is installed between them, connects mutually by screw thread between valve urceolus 13 upper ends and the star axle 12.Has button-head on the motion arm 16 of strip, have through hole 17 and aperture on ball valve 17 α, motion arm 16 is installed in the valve urceolus 13, has the hoop boss in the upper and lower side of C clamp plate 24, has truncated-spherical in the lower end of upper valve base 15 and the upper end of lower valve base 18, have cannelure on the kink 20, upper valve base 15 is contained in the lower end of star axle 12, and sealing ring is housed between them.Ball valve 17 α, lower valve base 18, kink 20 are contained in the valve urceolus 13 successively, and the button-head of motion arm 16 is extend in the aperture of ball valve 17 α, between lower valve base 18 and the kink 20 disk spring 19 are housed, and between lower valve base 18 and the kink 20 sealing ring 21 are housed.The lower end of star axle 12 has annular groove 14, the convex platform of 3-5 piece C clamp plate 24 is contained in the annular groove 14 of star axle 12 lower ends, the lower convex platform of C clamp plate 24 is contained in the annular groove of kink 20, by C clamp plate 24 upper valve base 15, ball valve 17 α, lower valve base 18, kink 20 is bound up.Lower contact 23 is installed in the lower end of valve urceolus 13 by screw thread, and adjusts disk spring 19, makes ball valve 17 α can rotational slide in the sphere of last lower valve base, between lower contact 23 and valve urceolus 13, kink 20

sealing ring

22,21 is housed respectively.

At well mouth of oil well rotary well head 26 is installed, rotation short circuit 25 is installed on the well head 26, oil pipe 27 is installed in pit shaft, oil pipe 27 lower ends connect oil extraction pump 29 successively, screen casing 30, expansion joint 31, tester 32, packer 33, sand control screen 34, electronic pressure gauge 35, local adjunction short circuit in necessity, sucker rod 28 is arranged in oil pipe 27, form the formation testing combined string, in the lower going-into-well, after packer 33 is set, utilization short oil pipe and expansion joint 31 are adjusted, make tester 32 be in free state (not stretched and compression load), turn left or the right-hand rotation test string by ground, rotation torque is passed to the top connection 1 of tester 32 by test string, top connection 1 drives 7 rotations of key axle, and rotation torque is passed to star axle 12 by star-wheel 10, and move or move down in 12 rotations of star axle, finish the state conversion that ball valve 17 α open or close, when ball valve 17 α opened fully, the automatic offloading functions of left-handed moment of torsion started.The back formation fluid that drives a well enters test string through sand control screen 34, flow into the oil jacket annular space through screen casing 30, this moment, solution gas was released in the annular space of oil jacket annular space top no liquid, having avoided oil extraction pump 29 to produce gas blocks up and the operating efficiency of reduction pump, oil stream enters oil extraction pump 29 by oil extraction pump pump head ported sub, be lifted to ground, after test design continuous production a period of time, the connection fixture block that only need dismantle during closing well between sucker rod 28 and the oil pumper just can be finished the operation of down-hole rotation formation tester 32 closing wells by right rotation well head rotating short-knot 25, reaches strata pressure and recovers the accurately purpose of admission of data.Through the left and right repeatedly Periodic Rotating test string of ground well head, just can realize repeatedly open and close well operation purpose of down-hole rotation formation tester.

Claims

1 one kinds of rotary stratum testers by top connection (1), urceolus (4) and lower contact (23) formation that is bound up, is characterized in that:

1. urceolus (4) is enclosed within on the key axle (7), and the upper end of key axle (7) is installed in the top connection (1) by screw thread;

2. spring (9) is sleeved on the lower end of spring base (8), and star-wheel (10) is contained on the star axle (12), and star-wheel (10), star axle (12) and key axle (7) mesh together by the key tooth, and spring base (8) is installed in the upper end of star axle (12) by screw thread;

3. valve urceolus (13) upper end connects with urceolus (4), star axle (12) respectively mutually by screw thread;

4. have through hole (17) and aperture on the ball valve (17 α), motion arm (16) is installed in the valve urceolus (13), and the spherical nose on the motion arm (16) stretches in the aperture on ball valve (17 α);

5. upper valve base (15) is contained in star axle (12) lower end, and ball valve (17 α), lower valve base (18) and kink (20) are contained in the valve urceolus (13) successively, by C clamp plate (24) they are bound up;

6. lower contact (23) is installed in the lower end of valve urceolus (13) by screw thread.

2 rotary stratum according to claim 1 testers is characterized in that:

1. between top connection (1) lower end and urceolus (4) upper end, bearing (3) is installed;

2. between the step of urceolus (4) and key axle (7), packing ring (5) is housed, between the step of lower valve base (18) and kink (20), disk spring (19) is housed.