CN104912545A - Well testing system combining electric control type oil pipe inner packer and direct reading pressure meter and well testing method combining electric control type oil pipe inner packer and direct reading pressure meter - Google Patents
Well testing system combining electric control type oil pipe inner packer and direct reading pressure meter and well testing method combining electric control type oil pipe inner packer and direct reading pressure meter Download PDFInfo
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- CN104912545A CN104912545A CN201510307483.4A CN201510307483A CN104912545A CN 104912545 A CN104912545 A CN 104912545A CN 201510307483 A CN201510307483 A CN 201510307483A CN 104912545 A CN104912545 A CN 104912545A
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Abstract
The invention relates to the technical field of petroleum well testing monitoring, in particular to a well testing system combining an electric control type oil pipe inner packer and a direct reading pressure meter and a well testing method combining the electric control type oil pipe inner packer and the direct reading pressure meter. The system and the method have the advantages that the shaft storage and collection effect can be effectively overcome; time and labor are saved; and the data measurement is accurate. The system comprises ground control equipment, a test pipe string and a combined well testing system, wherein the combined well testing system comprises the direct reading pressure meter, the electric control type oil pipe inner packer, a liquid control part, an electric control part and a cable; and the setting and unsetting states of the electric control type oil pipe inner packer are controlled by a computer or a ground instrument. The well testing system combining the electric control type oil pipe inner packer and the direct reading pressure meter and the well testing method combining the electric control type oil pipe inner packer and the direct reading pressure meter have the beneficial effects that measured data is accurate and reliable; the operation is simple; the well testing time can be greatly saved; the economic benefits can be improved; the system and the method are particularly applicable to construction of low-pressure and low-permeability wells and high-cost wells in desert hinterland; and the cost is greatly reduced.
Description
Technical field
The present invention relates to oil well testing monitoring technical field, particularly relate to packer and direct-reading pressure gauge in a kind of electric-controlled type oil pipe and combine well testing system and method.
Background technology
As everyone knows, well testing is an important operation in oil extraction process, the parameters such as the pressure of the instrument and meter measurement Oil/gas Well by specialty, temperature and output, object is production status and the dynamic parameter of monitoring Oil/gas Well, and then analyze the degree of porosity, permeability, skin factor etc. on stratum, thus geologic assessment is carried out to producing zone.The instrument that usual well testing adopts has direct reading electronic gauge and store electrons pressure gauge two kinds.
As shown in Figure 1, the method that direct reading electronic gauge well testing adopts is: after computer 60 is connected with ground instrument 59, be connected with the direct reading electronic gauge 51 of down-hole by cable 52 again, pressure and temperature data measured by direct reading electronic gauge 51 are sent to ground instrument 59 and computer 60 by cable 52, computer 60 is shown in real time by software and stores manometric temperature and pressure data, but, when utilizing direct reading electronic gauge 51 to carry out well testing, often because the restriction of cable 52 causes below direct-reading pressure gauge 51 cannot being transferred to testing valve, cannot be simple, enroll the shut-in pressure data below testing valve easily, surface shut-in can only be carried out by ground installation, simultaneously, closing well data measured by the well testing of employing direct reading electronic gauge 51 are owing to being subject to the well bore storage effect of thousands of meters (in oil well test process, due to the compressibility of the fluid in pit shaft, after closing well, formation fluid continues to assemble in well, after driving a well, formation fluid can not flow into the phenomenon of pit shaft at once) impact, often survey data is not accurate enough.
Storing manometric well-logging method is: programme in the face of storing pressure gauge on ground, then battery is accessed, storing pressure gauge is contained in storage manometer, pressure gauge G.I.H will be stored by oil pipe, store pressure gauge will carry out pressure and temperature automatically sampling according to the program finished in advance, and sampled result is stored in the memory in pressure gauge, after test string all trips out well head, playback goes out to store the good data of pressure gauge record again, when utilizing storage pressure gauge to carry out well testing, downhole closing can be carried out by testing valve in the place that oil reservoir is very near, store pressure gauge and can record shut-in pressure below testing valve and temperature data, avoid well bore storage effect, survey data and compare as accurately, but store pressure gauge once be lowered in well, operating personnel cannot judge that whether the storage pressure gauge work of down-hole is normal, the needs whether data simultaneously meet geologic interpretation are all unknown, can only by the time store after pressure gauge trips out ground from down-hole, just can know after the data stored in pressure gauge being carried out playback by computer, if the data not getting regulation or the data obtained have problem, operating personnel are needed to do over again, so repeat often take a lot of work effort greatly and there is very large blindness.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides one effectively overcome well bore storage effect, time saving and energy saving, survey data accurately in electric-controlled type oil pipe packer and direct-reading pressure gauge combine well testing system and method.
In electric-controlled type oil pipe of the present invention, packer and direct-reading pressure gauge combine well testing system, comprise GCU, test string and combination well testing system, described GCU comprises production tree, preventer assembly, lubricator assembly, ground instrument and computer, described production tree, preventer assembly and lubricator assembly are linked in sequence from the bottom to top, described preventer assembly and lubricator assembly are fixed on production tree, described test string and combination well testing system are all placed in well, described combination well testing system comprises direct reading electronic gauge, packer in electric-controlled type oil pipe, hydraulic part, automatically controlled part and cable, described direct reading electronic gauge, hydraulic control part and automatically controlled part are all mounted with packer in electric-controlled type oil pipe, described test string comprises oil pipe external packer, for washing circulating valve and the oil pipe of kill job, in described electric-controlled type oil pipe, packer has and sets and deblocking two states,
When described direct reading electronic gauge needs admission downhole closing data, computer or ground instrument send control instruction, drive the control circuit of automatically controlled part to start the hydraulic system of hydraulic control part, make packer in electric-controlled type oil pipe reach the state of setting, close the production passage of test string;
When described direct reading electronic gauge need admission down-hole drive a well data time, computer or ground instrument send control instruction, drive the control circuit of automatically controlled part to drive the hydraulic system of hydraulic control part, make packer in electric-controlled type oil pipe be switched to unset state, open the production passage of test string;
In described electric-controlled type oil pipe the state that sets of packer and deblocking condition controlled in computer or ground instrument.
Further, described GCU also comprises top sheave, lower sheave and cable reel, and described cable is supported and guiding by top sheave and lower sheave.
Further, one end of described cable is connected with combination well testing system, and described combination well testing system is suspended from described test string by cable, the other end order of described cable passes through production tree, preventer assembly, lubricator assembly, top sheave, lower sheave, and is connected with cable reel.
In electric-controlled type oil pipe, packer and direct-reading pressure gauge combine well-logging method, comprise step as follows:
S1, transfer test string and set: the test string comprising oil pipe external packer, circulating valve and oil pipe being transferred to pit shaft, subscribes position, set oil pipe external packer;
S2, transfer combination well testing system: adopt cable to be transferred by the combination well testing system comprising packer, hydraulic part, automatically controlled part in direct reading electronic gauge, electric-controlled type oil pipe and subscribe position to test string;
S3, down-hole plugging and direct-reading well testing: carry out underground switch well and well test data admission;
When needs admission downhole closing data, computer or ground instrument send control instruction, drive the control circuit of automatically controlled part to start the hydraulic system of hydraulic control part, make packer in electric-controlled type oil pipe reach the state of setting, and then close the production passage of test string;
When needs admission down-hole drives a well data, computer or ground instrument send control instruction, drive the control circuit of automatically controlled part to drive the hydraulic system of hydraulic control part, make packer in electric-controlled type oil pipe be switched to unset state, and then open the production passage of test string;
S4, construction ending: after well test data admission terminates, packer in electric-controlled type oil pipe is switched to unset state, above carry combination well testing system in lubricator assembly, open circulating valve to carry out washing kill job, separate sealed tube external packer, trip out test string, complete construction ending.
By such scheme, the present invention has the following advantages: native system passes through the cooperation of packer and direct reading electronic gauge in electric-controlled type oil pipe, and send control instruction by computer or ground instrument, drive the control circuit of automatically controlled part to start or discharge the hydraulic system of hydraulic control part, packer in electric-controlled type oil pipe is made to reach the state of setting or unset state, overcoming direct reading electronic gauge down-hole can not closing well, there is the impact of well bore storage effect, survey the inaccurate disadvantage of data, the instruction simultaneously sent by computer or ground instrument controls the circuit of automatically controlled part, and divide control hydraulic control part by electric control part, also overcome simultaneously and store the disadvantage that pressure gauge well testing GCU cannot monitor downhole electronic pressure bomb duty, solve conventional well-logging method the problem of pressure and temperature under irrealizable Real-Time Monitoring downhole closing state verification valve, through the repeatedly practice of operating personnel, obtain surveyed data not only actual response payzone temperature, pressure change, survey data accurately and reliably, and it is simple to operate, can greatly save the well testing time, increase economic efficiency, be specially adapted to low pressure, low seepage well, the construction of the high cost well on sea and innerland, desert, save great amount of cost.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of manual, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of direct reading electronic gauge well testing system;
Fig. 2 is the structural representation that in electric-controlled type oil pipe of the present invention, packer and direct-reading pressure gauge combine well testing system and method.
11, production tree; 12, preventer assembly; 13, lubricator assembly; 14, top sheave; 15, lower sheave; 16, cable reel; 17, ground instrument; 18, computer; 29, test string; 291, oil pipe external packer; 292, circulating valve; 293, oil pipe; 2, well testing system is combined; 21, direct reading electronic gauge; 22, packer in electric-controlled type oil pipe; 23, hydraulic control part; 24, automatically controlled part; 25, cable.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Shown in Figure 2, in electric-controlled type oil pipe, packer and direct-reading pressure gauge combine well testing system, comprise GCU, test string 29 and combination well testing system 2, GCU comprises production tree 11, preventer assembly 12, lubricator assembly 13, ground instrument 17 and computer 18, described production tree 11, preventer assembly 12 and lubricator assembly 13 are linked in sequence from the bottom to top, described preventer assembly 12 and lubricator assembly 13 are fixed on production tree 11, described test string 29 and combination well testing system 2 are all placed in well, it is characterized in that, described combination well testing system 2 comprises direct reading electronic gauge 21, packer 22 in electric-controlled type oil pipe, hydraulic part 23, automatically controlled part 24 and cable 25, described direct reading electronic gauge 21, hydraulic control part 23 and automatically controlled part 24 are all mounted with packer 22 in electric-controlled type oil pipe, test string 29 comprises oil pipe external packer 291, for washing circulating valve 292 and the oil pipe 293 of kill job, in electric-controlled type oil pipe, packer 22 has and sets and deblocking two states, in electric-controlled type oil pipe the state that sets of packer 22 and deblocking condition controlled in computer 18 or ground instrument 17,
When direct reading electronic gauge 21 needs admission downhole closing data, computer 18 or ground instrument 17 send control instruction, drive the control circuit of automatically controlled part 24 to start the hydraulic system of hydraulic control part 23, make packer 22 in electric-controlled type oil pipe reach the state of setting, close the production passage of test string 29;
When direct reading electronic gauge 21 need admission down-hole drive a well data time, computer 18 or ground instrument 17 send control instruction, drive the control circuit of automatically controlled part 24 to drive the hydraulic system of hydraulic control part 23, make packer 22 in electric-controlled type oil pipe be switched to unset state, open the production passage of test string 29.
GCU also comprises top sheave 14, lower sheave 15 and cable reel 16, and cable 25 is supported by top sheave 14 and lower sheave 15 and led.
One end of cable 25 is connected with combination well testing system 2, and combination well testing system 2 is suspended from test string 29 by cable 25, the other end order of cable 25 passes through production tree 11, preventer assembly 12, lubricator assembly 13, top sheave 14, lower sheave 15, and is connected with cable reel 16.
In electric-controlled type oil pipe, packer and direct-reading pressure gauge combine well-logging method, comprise step as follows:
S1, transfer test string 29 and set: the test string 29 comprising oil pipe external packer 291, circulating valve 292 and oil pipe 293 being transferred to pit shaft, subscribes position, set oil pipe external packer 291;
S2, transfer combination well testing system 2: adopt cable 25 to be transferred by the combination well testing system 2 comprising packer 22, hydraulic part 23, automatically controlled part 24 in direct reading electronic gauge 21, electric-controlled type oil pipe and subscribe position to test string 29;
S3, down-hole plugging and direct-reading well testing: carry out underground switch well and well test data admission;
When needs admission downhole closing data, computer 18 or ground instrument 17 send control instruction, drive the control circuit of automatically controlled part 24 to start the hydraulic system of hydraulic control part 23, make packer 22 in electric-controlled type oil pipe reach the state of setting, and then close the production passage of test string 29;
When needs admission down-hole drives a well data, computer 18 or ground instrument 17 send control instruction, drive the control circuit of automatically controlled part 24 to drive the hydraulic system of hydraulic control part 23, make packer 22 in electric-controlled type oil pipe be switched to unset state, and then open the production passage of test string 29;
S4, construction ending: after well test data admission terminates, packer 22 in electric-controlled type oil pipe is switched to unset state, on carry in combination well testing system 2 to lubricator assembly 13, open circulating valve 292 to carry out washing kill job, separate sealed tube external packer 291, trip out test string 29, complete construction ending.
Native system passes through the cooperation of packer 22 and direct reading electronic gauge 21 in electric-controlled type oil pipe, and send control instruction by computer 18 or ground instrument 17, the control circuit of automatically controlled part 24 is driven to start or discharge the hydraulic system of hydraulic control part 23, packer 22 in electric-controlled type oil pipe is made to reach the state of setting or unset state, overcoming direct reading electronic gauge down-hole can not closing well, there is the impact of well bore storage effect, survey the inaccurate disadvantage of data, the instruction sent by computer 18 or ground instrument 17 controls the circuit of automatically controlled part 24, and control hydraulic control part 23 by automatically controlled part 24, also overcome simultaneously and store the disadvantage that pressure gauge well testing GCU cannot monitor downhole electronic pressure bomb duty, solve conventional well-logging method the problem of pressure and temperature under irrealizable Real-Time Monitoring downhole closing state verification valve, through the repeatedly practice of operating personnel, obtain surveyed data not only actual response payzone temperature, pressure change, survey data accurately and reliably, and it is simple to operate, can greatly save the well testing time, increase economic efficiency, be specially adapted to low pressure, low seepage well, the construction of the high cost well on sea and innerland, desert, save great amount of cost.
The above is only the preferred embodiment of the present invention; be not limited to the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (4)
1. in electric-controlled type oil pipe, packer and direct-reading pressure gauge combine well testing system, comprise GCU, test string (29) and combination well testing system (2), described GCU comprises production tree (11), preventer assembly (12), lubricator assembly (13), ground instrument (17) and computer (18), described production tree (11), preventer assembly (12) and lubricator assembly (13) are linked in sequence from the bottom to top, described preventer assembly (12) and lubricator assembly (13) are fixed on production tree (11), described test string (29) and combination well testing system (2) are all placed in well, it is characterized in that, described combination well testing system (2) comprises direct reading electronic gauge (21), packer (22) in electric-controlled type oil pipe, hydraulic part (23), automatically controlled part (24) and cable (25), described direct reading electronic gauge (21), hydraulic control part (23) and automatically controlled part (24) are all mounted with packer (22) in electric-controlled type oil pipe, described test string (29) comprises oil pipe external packer (291), for washing circulating valve (292) and the oil pipe (293) of kill job, in described electric-controlled type oil pipe, packer (22) has and sets and deblocking two states,
When described direct reading electronic gauge (21) needs admission downhole closing data, computer (18) or ground instrument (17) send control instruction, drive the control circuit of automatically controlled part (24) to start the hydraulic system of hydraulic control part (23), make packer (22) in electric-controlled type oil pipe reach the state of setting, close the production passage of test string (29);
When described direct reading electronic gauge (21) need admission down-hole drive a well data time, computer (18) or ground instrument (17) send control instruction, drive the control circuit of automatically controlled part (24) to drive the hydraulic system of hydraulic control part (23), make packer (22) in electric-controlled type oil pipe be switched to unset state, open the production passage of test string (29);
In described electric-controlled type oil pipe the state that sets of packer (22) and deblocking condition controlled in computer (18) or ground instrument (17).
2. in electric-controlled type oil pipe according to claim 1, packer and direct-reading pressure gauge combine well testing system, it is characterized in that, described GCU also comprises top sheave (14), lower sheave (15) and cable reel (16), and described cable (25) is supported and guiding by top sheave (14) and lower sheave (15).
3. in electric-controlled type oil pipe as claimed in claim 2, packer and direct-reading pressure gauge combine well testing system, it is characterized in that, one end of described cable (25) is connected with combination well testing system (2), and described combination well testing system (2) is suspended from described test string (29) by cable (25), the other end order of described cable (25) passes through production tree (11), preventer assembly (12), lubricator assembly (13), top sheave (14), lower sheave (15), and is connected with cable reel (16).
4. in electric-controlled type oil pipe, packer and direct-reading pressure gauge combine well-logging method, it is characterized in that, comprise step as follows:
S1, transfer test string (29) and set: the test string (29) comprising oil pipe external packer (291), circulating valve (292) and oil pipe (293) being transferred to pit shaft, subscribes position, set oil pipe external packer (291);
S2, transfer combination well testing system (2): adopt cable (25) will comprise packer (22) in direct reading electronic gauge (21), electric-controlled type oil pipe, hydraulic part (23), automatically controlled part (24) combination well testing system (2) transfer to reservation position in test string (29);
S3, down-hole plugging and direct-reading well testing: carry out underground switch well and well test data admission;
When needs admission downhole closing data, computer (18) or ground instrument (17) send control instruction, drive the control circuit of automatically controlled part (24) to start the hydraulic system of hydraulic control part (23), make packer (22) in electric-controlled type oil pipe reach the state of setting, and then close the production passage of test string (29);
When needs admission down-hole drives a well data, computer (18) or ground instrument (17) send control instruction, drive the control circuit of automatically controlled part (24) to drive the hydraulic system of hydraulic control part (23), make packer (22) in electric-controlled type oil pipe be switched to unset state, and then open the production passage of test string (29);
S4, construction ending: after well test data admission terminates, packer (22) in electric-controlled type oil pipe is switched to unset state, on carry combination well testing system (2) in lubricator assembly (13), open circulating valve (292) to carry out washing kill job, separate sealed tube external packer (291), trip out test string (29), complete construction ending.
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| CN107780912A (en) * | 2016-08-31 | 2018-03-09 | 中国石油天然气股份有限公司 | Cased well fracturing fluid drainage method and system |
| CN110043208A (en) * | 2019-03-28 | 2019-07-23 | 胜利油田畅海石油技术有限公司 | The pulse neutron oxygen activation intake profile test device and construction technology in offshore platform |
| CN111855163A (en) * | 2019-04-19 | 2020-10-30 | 中国石油天然气股份有限公司 | Well testing steel wire fatigue simulation device and method |
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| CN111855163A (en) * | 2019-04-19 | 2020-10-30 | 中国石油天然气股份有限公司 | Well testing steel wire fatigue simulation device and method |
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