CN2457569Y

CN2457569Y - Water injection well layering test pressure gauge

Info

Publication number: CN2457569Y
Application number: CN 00257373
Authority: CN
Inventors: 满林
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-24
Filing date: 2000-11-01
Publication date: 2001-10-31
Anticipated expiration: 2010-11-01

Abstract

A pressure gauge for the layered test of water injection well is composed of casing, pressure sensor and temp sensor in the middle of casing, pressure guide hole on the side wall of casing, battery connected to the circuit board of two sensors, and at least two O-shaped sealing rings in the upper and lower ring slots of pressure guide hole. The utility model discloses can realize shutting in the pit, can carry out the multilayer test simultaneously, be applicable to the layering testing pressure of water injection well, oil well and gas well.

Description

Water injection well zonation test pressure gauge

The utility model relates to the separated-zone water infection oil field proving installation, specifically a kind of water injection well zonation test pressure gauge.

Measuring water filling stressor layer and pressure fall-off curve is the effective means of obtaining reservoir parameter, and the method that measures zonal pressure at present is that the water nozzle of accident layer is pulled out, drops into dead mouth again, and pressure gauge measures the pressure that does not block the mouth layer in pit shaft.This method of testing is at surface shut-in, because the pressure fall-off curve when the afterflow phenomenon of liquid can not be measured liquid and just stopped flowing in the pit shaft can't obtain various parameters, and can not measure each layer drawdown curve of same well simultaneously.

The purpose of this utility model provides and a kind ofly can realize downhole closing, can carry out the zonation test pressure gauge that is applicable to water injection well, oil well, gas well of multi-layer testing simultaneously.

The purpose of this utility model is achieved by the following technical solution:

A kind of water injection well zonation test pressure gauge, its housing is elongated cylindrical, is provided with gland on the top of housing, one fishing head is stretched out by the gland center pit, the lower cylindrical of fishing head contacts in the cam of a location device, and this cylinder top is set with back-moving spring, it is characterized in that:

Be fixed with the sniffer of being made up of pressure transducer, temperature sensor in the inner chamber of the middle part of housing, this two sensor is communicated with the pressure guide hole of housing sidewall, and the interface of the circuit board of this two sensor connects battery;

At least one " O " RunddichtringO is housed in the upper and lower annular groove outside of the pressure guide hole of housing; External diameter that should " O " RunddichtringO and matching used water injection allocator be former, and to be used to install the pore internal diameter of water filling blanking plug corresponding.

On " O " RunddichtringO in the described housing annular groove outside has. two groups down, two every group.

Described housing is by epimere, the stage casing, hypomere is formed, gland is equipped with at the epimere top, its underpart is with the blanking cover that is threaded, blanking cover is fixed in the stage casing, this blanking cover center pit is communicated with the pressure guide hole that is arranged at pars infrasegmentalis, this pressure guide hole has four holes of circumference in equal parts, install pressure transducer in the stage casing inner chamber under blanking cover, temperature sensor and circuit board thereof, should there be the screw of external thread axle journal and hypomere to match by middle pars infrasegmentalis, " O " RunddichtringO is housed in the ring groove of this axle journal, in the inner chamber of hypomere battery is housed, join with the circuit board interface that is loaded in the axle journal endoporus, this battery is by spring-loaded, and the bottom of this hypomere is the hemisphere face shape.

The utility model has following actively useful effect:

1. the utility model can be realized downhole closing, can carry out the multilayer pressure test simultaneously, and the pressure fall-off curve when it can be measured liquid and has just stopped flowing also calculates parameter in view of the above, and this is that surface shut-in institute is irrealizable.

2. be installed on the pore that water injection allocator was used for installing the water filling blanking plug originally when this pressure gauge uses, do not need to join special-purpose water injection allocator in addition, easy to use, operating cost is low.

3. this pressure gauge not only can be applicable to water injection well, also can be applicable to oil well, gas well, tests zonal pressure.

Now in conjunction with the accompanying drawings:

Fig. 1 is the structural representation of the utility model one embodiment;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is a kind of embodiment of user mode of the present utility model; This pressure gauge is arranged at eccentric water allocater;

The same Fig. 3 of Fig. 4 is arranged at the embodiment of water injection allocator central authorities for this pressure gauge;

Fig. 5 shows the water distribution tubing string synoptic diagram of the installation water injection allocator of prior art.

Accompanying drawing number:

1. housing

101. epimere 102. stage casings 103. hypomeres

104. pressure guide hole 105. stage casing axle journal 106. " O " RunddichtringOs

2. gland 201. O-ring seals

3. fishing head 301. lower cylindrical

4. locating device 401. cams 402. back-moving springs

5. blanking cover 501. center pits

6. sniffer 601. pressure transducers 602. temperature sensors

603. circuit board 604. batteries 605. circuit board interface

606. spring

7. " O " RunddichtringO 701. epimere O-ring seals 702. epimere O-ring seals

703. hypomere O-ring seal 704. hypomere O-ring seals

8. water injection allocator 801. eccentric water distributors 802. center water injection allocators

803. roman 805. lower subs are picked out in top connection 804.

806. guide way

9. water distribution tubing string 901. working barrels 902. sealing layers

903. screen casing 904. plugs

Please refer to Fig. 1, Fig. 2, the utility model is a kind of water injection well zonation test pressure gauge, its housing 1 is elongated cylindrical, be provided with gland 2 on the top of housing, one fishing head 3 is stretched out by gland 2 center pits, the lower cylindrical 301 of fishing head 3 contacts in the cam 401 of a location device 4, and these cylinder 301 tops are set with back-moving spring 402, and the structure of the water filling blanking plug in above feature and the prior art is identical.

Feature of the present utility model is: be fixed with the sniffer of being made up of pressure transducer 601, temperature sensor 602 6 in the inner chamber of the middle part of housing 1, this two sensor is communicated with the pressure guide hole 104 of housing sidewall, the interface 605 of the circuit board 603 of this two sensor connects battery 604, and described sniffer 6 can use prior art;

In the pressure guide hole 104 upper and lower annular groove outsides of housing 1, at least one " O " RunddichtringO 701,703 is housed respectively; External diameter that should " O " RunddichtringO and matching used water injection allocator 8 be former, and to be used to install the pore internal diameter of water filling blanking plug corresponding.

" O " RunddichtringO in described housing 1 annular groove outside has upper and lower two groups, two every group.

Described housing 1 is by epimere 101, stage casing 102, hypomere 103 is formed, gland 2 is equipped with at epimere 101 tops, its underpart is with the blanking cover 5 that is threaded, blanking cover 5 is fixed in stage casing 102, the center pit 501 of this blanking cover 5 is communicated with the pressure guide hole 104 that is arranged at epimere 101 bottoms, this pressure guide hole 104 has four holes of circumference in equal parts, installing pressure transducer 601 in stage casing 102 inner chambers under blanking cover 5, temperature sensor 602 and circuit board 603 thereof, these 102 bottoms, stage casing have the external thread axle journal 105 and the screw of hypomere 103 to match, " O " RunddichtringO 106 is housed in the ring groove of this axle journal, battery 604 is housed in the inner chamber of hypomere 103, join with the circuit board interface 605 that is loaded in axle journal 105 endoporus, this battery is by spring 606 supportings, and the bottom of this hypomere 103 is the hemisphere face shape.

Please refer to Fig. 3, pressure gauge is dropped in the eccentric orfice of each layer eccentric water distributor 801 by throw in catcher, this eccentric orfice was used to install the water filling blanking plug originally, this pressure gauge is by locating device 4 location, O-ring seal 701,702 and O-ring seal 703,704 separate pit shaft and water filling layer, and pressure guide hole 104 is communicated with the water filling layer, and the water filling stressor layer changes by pressure guide hole passes to pressure transducer in the housing, by electronic circuit image data and storage, by throw in catcher each stressor layer meter is pulled out after the end of test (EOT).Realize that downhole closing measures the purpose of zonal pressure.

Throw in catcher can drop into many pressure gauges respectively respectively in every layer the eccentric orfice of eccentric water distributor, realizes the purpose that multilayer is tested simultaneously.

Please refer to Fig. 4, the utility model also can be used for the center water injection allocator, in being used to install the center pit of water filling blanking plug originally test pressure meter of the present utility model is installed.

Fig. 5 shows the synoptic diagram of the water distribution tubing string 9 of prior art, and water injection allocator 8 is equipped with in each layering.

Claims

1. water injection well zonation test pressure gauge, its housing (1) is elongated cylindrical, be provided with gland (2) on the top of housing, one fishing head (3) is stretched out by gland (2) center pit, the lower cylindrical (301) of fishing head (3) contacts in the cam (401) of a location device (4), this cylinder (301) top is set with back-moving spring (402), it is characterized in that:

In the middle part inner chamber of housing (1), be fixed with the sniffer of forming by pressure transducer (601), temperature sensor (602) (6), this two sensor is communicated with the pressure guide hole (104) of housing sidewall, and the interface (605) of the circuit board of this two sensor (603) connects battery (604);

In the upper and lower annular groove outside of pressure guide hole (104) of housing (1), at least one " O " RunddichtringO (701), (703) are housed respectively; External diameter that should " O " RunddichtringO and matching used water injection allocator (8) be former, and to be used to install the pore internal diameter of water filling blanking plug corresponding.

2. water injection well zonation test pressure gauge as claimed in claim 1 is characterized in that: " O " RunddichtringO in described housing (1) annular groove outside has upper and lower two groups, two every group.

3. water injection well zonation test pressure gauge as claimed in claim 1, it is characterized in that: described housing (1) is by epimere (101), stage casing (102), hypomere (103) is formed, gland (2) is equipped with at epimere (101) top, its underpart is with the blanking cover that is threaded (5), blanking cover (5) is fixed in stage casing (102), the center pit (501) of this blanking cover (5) is communicated with the pressure guide hole (104) that is arranged at epimere (101) bottom, this pressure guide hole (104) has four holes of circumference in equal parts, install pressure transducer (601) in stage casing (102) inner chamber under blanking cover (5), temperature sensor (602) and circuit board (603) thereof, bottom, this stage casing (102) has the external thread axle journal (105) and the screw of hypomere (103) to match, " O " RunddichtringO (106) is housed in the ring groove of this axle journal, battery (604) is housed in the inner chamber of hypomere (103), join with the circuit board interface (605) that is loaded in axle journal (105) endoporus, this battery is by spring (606) supporting, and the bottom of this hypomere (103) is the hemisphere face shape.