CN1065943C - Method and facilities for drilling well, logging and early trial production at same time - Google Patents
Method and facilities for drilling well, logging and early trial production at same time Download PDFInfo
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- CN1065943C CN1065943C CN98117960A CN98117960A CN1065943C CN 1065943 C CN1065943 C CN 1065943C CN 98117960 A CN98117960 A CN 98117960A CN 98117960 A CN98117960 A CN 98117960A CN 1065943 C CN1065943 C CN 1065943C
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Abstract
The present invention provides a method and a device for drilling a well, having a test and carrying out early trial production simultaneously, which relates to a method and a device for oil extraction. The present invention can be used for simultaneously drilling a well, prolonging a test and carrying out early trial production and can obtain the data of the seepage stable state and the information of oil field boundaries through the long time monitoring of temperatures, pressure, flow quantities, pressure recovery curves, ratios of gas, oil and water, sand content and oiliness analysis under dynamic and static conditions at a well mouth, so that the present invention can provide reliable data for the evaluation of output capability and output rate and the design of engineering concept. Gas-liquid separation is carried out to produces of an oil well, gas is burnt after purified, and liquid is delivered to an oil storage ship through an oil delivering hose and is carried back by a shuttle oil ship.
Description
The present invention relates to oil production method, also relate to oil production equipment.
Carry out oil exploration at sea, need to use offshore boring island carry out drilling well, and with creeping into capable test jobs, wait oil gas pit shaft open flow clean after, promptly carry out continuous 6-12 hour drillstem test (DST).And offshore oil production according to existing conventional way, should be built fixing oil recovery production platform earlier, supporting relatively large single point mooring's oil storage wheel and corresponding pipeline under the ocean etc.And build these fixing large-scale production facilities, what engineering design teacher carried out the designing institute foundation mainly is based on the data that DST obtains.Because DST when test, the continuous production time of oil gas well generally has only 6-12 hour, so that the pressure-wave emission distance is very short, and oil well production is in elastic instability vadose epoch all the time, so can not be from the following important parameter of DST acquisition: 1, the constant rate of production of oil well; 2, the production dynamic data of Bi Yao well; 3, oil reservoir energy.Because the production capacity of DST test is higher, commonly used in the past radially model, IPR curve, correction factor etc. are proofreaied and correct tested productivity; Yet model, curve, coefficient itself as correction reference all lack compellent argument, and have made revised conclusion by it and still with the actual conditions in oil field sizable gap is arranged.Thus it can be asserted that, the test data of DST can not be as the accurate foundation of oil field development, reliable basis in the time of more can not be as the work post conceptual design, for obtain can the exact evaluation oil field development data and for engineering design provides stable, reliable data, prolong test (EDST) and be very important.Yet, prolong test, certainly lead to the handling problem of oil well produced liquid; To this, we can not because this not only wastes energy, also pollute the environment oil gas emptying burning as doing in well testing DST when test certainly, and it is seriously polluted and be difficult to handle to the sea especially to fail the oil droplet of completing combustion, destroys ecological environment easily.
The objective of the invention is: the method and the facility that provide the drilling well of a kind of limit to produce as a trial in early days while testing, in the short as far as possible time, finish the data that need when testing and obtaining evaluating oilfield and concept of engineering design, make full use of offshore boring island or subsea equipment simultaneously, under the condition that increases easy crude Treatment equipment, the extraction liquid of oil well at test period is reclaimed, obtain best economic benefit and environmental benefit.
For achieving the above object, the present invention takes following technical scheme:
The method that the drilling well of a kind of limit is produced as a trial in early days while testing is characterized in that: when offshore boring island carries out the drillng operation of first mouthful of well, carry out measuring while drilling simultaneously; Promptly prolong test EDST and early stage trial production test when first mouthful of well drilling well finishes, simultaneously second mouthful of well that is creeping into carried out measuring while drilling, and one by one measuring while drilling, EDST and early stage trial production are carried out in the drilling well of this offshore boring island successively; The time of EDST test should be able to guarantee pressure-wave emission to the border, and flow through oil reservoir reaches steady-state flow or pseudo stable flow, and the shortest testing time of EDST is:
In the formula, μ--underground viscosity of crude Mpas
φ--reservoir pore degree decimal
Ct--system compressibility Mpa
-1
A--oil area km
2
K--mean permeability md
Prolonging test EDST comprises: 1. oil gas metering, with the synchronous continuous metering of three phases separator; Can adopt intermittently according to platform producing well number and to measure, but in month of the initial stage of operation, every day, every well should continuous metering 4-8 hour, produce stable after, every well every day continuous metering 2 hours at least; Metering simultaneously, get wellhead crude oil sample carry out moisture, contain the sand analysis; 2. well testing; At the beginning of the operation, after spurting totally, pit shaft carries out the test of static pressure and pressure build-up curve immediately, to obtain the original formation pressure data; Carry out flow-after-flow test, measure stream pressure, flow and gradient thereof, measuring pressure recovery curve again, after bringing in, each oil nozzle uses that ground directly-reading pressure system monitoring stream is pressed, stream temperature, static pressure, static temperature, static temperature gradient and pressure build-up curve are tested; After production is stable, oil well is carried out the primary system well testing, close well surveying static pressure and pressure build-up curve again; To carry out pulse test to determine the connection situation between oil well to two mouthfuls of production platforms more than the well; 3. production logging: every layer of production profile production logging that will once comprise flow, pressure, density, temperature, to carry out specific retention mensuration to producing well, the injection test well need carry out the production logging of an intake profile; 4. fluid properties monitoring: the operation initial stage must be obtained the high-voltage physics data of formation fluid, the multilayer oil-producing well is preferably obtained the formation fluid high-voltage physics data of layering; The operation initial stage should be obtained the oil gas water sample of normal pressure, and carries out oil gas water conventional project and analyze and comprehensive crude oil evaluation, isolated gas in producing is proceeded to contain C at least
7Above proximate analysis will be analyzed paraffin content and separate out temperature extraction liquid, after production is stable, carries out the proximate analysis of a conventional gas and oil water sampling analysis and production separator gas at least again; Oil well production generation has channeling, water outlet, output jumps or bust, then should be in time to the produced fluid sample analysis; The processing method of oil well produced fluid is after pit shaft spurts totally, the produced fluid of oil well is directly introduced the simple and easy crude Treatment sledge piece that is contained on offshore boring island or the subsea equipment from the well head shut-off valve, burn after gas-liquid separation, gas being caused burner, simultaneously oil water mixture is passed to the oil storage wheel through oil hose, and it is transported to land oil refinery or storage tank farm by shuttle tanker.
The equipment that the present invention's a kind of limit drilling well is produced as a trial in early days while testing is: it comprises a simple and easy production platform, two point elasticity mooring gears under water, a floating oil hose and the shuttle tanker that oil storage wheel, a cover mooring oil storage are taken turns; Described simple and easy production platform, can select self-elevating drilling platform, semisubmersible drilling platform or subsea equipment for use according to marine site depth of water situation, which is provided with an easy crude Treatment sledge piece of cover and a test analysis chamber that is equipped with the instrument and meter of long-term test usefulness; Described oil storage wheel, its tonnage are ten days extraction liquid measures of oil well and interior extraction liquid measure sum of average waiting time of marine bad weather, and between two suction anchor on lines, and its direction and seawater high current are to consistent by two point elasticity mooring gear moorings under water for it; Described two point elasticity mooring gears under water are made up of with the connection chain, sub-surface buoy, friction chain, nylon cable and the rapid unhooking device that are connected suction anchor and oil storage wheel two suction anchors; Described oil hose, its two ends are jumper hose and connect with the end of gas-liquid separator and oil storage wheel on the production platform respectively by fastener that its middle part frame floats on the sea on the floating drum of connecting and by floating drum; Described simple and easy crude Treatment sledge piece is made up of two primary separators, second-stage separator, high pressure scrubber, low-pressure washer and pipeline road, pump, valve, transport to high-pressure burner by the gas that high pressure scrubber is discharged, transport to low-pressure burner by the gas that low-pressure washer is discharged.
The equipment that the drilling well of aforesaid limit is produced as a trial in early days while testing, I and II eliminator and high and low pressure washer are being housed and are being provided with grease proofing, the fuel gas probe of gas leakage, ultraviolet fire probe and fusible plug loop from the zone of 5 meters of these equipment, place in contiguous this zone is equipped with portable combustible gas detector, and foam fire pump, powder fire extinguisher, Helen's 1211 fire extinguishers should be set in the oil producing operation district; In addition, in this zone, leave the passway for escaping of sufficient size.
Be clearer description overall plan of the present invention, be described below in conjunction with most preferred embodiment and accompanying drawing thereof now:
The facility layout figure of the early stage trial production of Fig. 1-enforcement the present invention.
Fig. 2-crude oil primary treatment process chart.
Schematic diagram is divided in deathtrap on Fig. 3-drilling-production platform.
Fire-fighting equipment arrangement diagram on Fig. 4-drilling-production platform.
Method that limit provided by the invention drilling well is produced as a trial in early days while testing and facility can satisfy drillng operation fully, prolong the needs of test and early stage trial production.The prolongation testing time was generally 25 days-50 days, so can obtain the data under seepage flow stable state or the quasi-stable state, for estimating that accurately production capacity provides authentic data, by dynamic pressure, static pressure, pressure build-up curve test, to determine the field boundary condition and have, noenergy is replenished and the estimation oil recovery phase provides practical foundation; Dynamic data is tested and waited over time to wellhead temperature, pressure, oil-water ratio oil, for concept of engineering design provides solid foundation, thereby make scale, process choice and the lectotype selection etc. of project engineering meet actual production capacity, productive rate, the oil of oil well more.For being defined as oil field, border or this class oil well of satellite well by prolonging test, its productive life is not long, should not build large-scale fixation means, and the drilling-production platform that then available the present invention uses carries out short-term production, saves expenditure of construction greatly, and application examples is as follows:
Routine 29-November 22 1:1994 September, in CFD1-6 oil field, middle part, the Bohai Sea, at first use the present invention, carried out altogether 55 days, produce 12653 tons of crude oil, and measured the oil field development evaluation, determine the data information that oil production technology and equipment and engineering design all are highly profitable.
Routine 23-October 9 2:1995 June, carried out 109 days pilot production and test at Liaodong Wan JZ9-3-8 well, produced 15200 meters
3Crude oil has been found three fresh oil groups and three natural gas reservoirs, has obtained comparatively accurate reservoir parameter, and the oil gas well has been made overall merit again, and decision is exploitation again, is come back to life in this oil field.
Example 3 prolongs test at J, the F of SZ36-1 between the district year January in December nineteen ninety-five-96, fails by test in the original plan because of using suction anchor mooring failure.But from the mooring failure, we find should use a formula suction anchor for the hardpan seabed.
Example 15 ,-July 24,4,1997 on April, the QHD32-6-4 well that adopted the crane barge tieback first, and done 101 days long-term test and pilot production.Shallow, reservoir is loose because bury in the QHD32-6 oil field, oil area is big, oil is thick, the exploitation difficulty is big, and the exploitation of this class reservoir in the Bohai Sea beyond example still.For further obtaining the reservoir parameter in this oil field, understand fluid seepage flow feature, the actual production capacity of oil well is sent out and main production target situation over time, for the oil field development evaluation provides the more reliable firsthand information, in whole prolongation test process, electric screw pump testing tube string and capillary pressure measuring technology and water pack gravel sand control technique have been adopted, obtain layering and closed a layer test data, and having obtained fluid sample in different test layers position, these data provide reliable foundation for the establishment and the exploitation par of the determining of oil field rational productivity, oilfield development program.
Claims (3)
1, the method produced as a trial in early days while testing of a kind of limit drilling well is characterized in that: when offshore boring island carries out the drillng operation of first mouthful of well, carry out measuring while drilling simultaneously; Promptly prolong test EDST and early stage trial production test when first mouthful of well drilling well finishes, simultaneously second mouthful of well that is creeping into carried out measuring while drilling, and one by one measuring while drilling, EDST and early stage trial production are carried out in the drilling well of this offshore boring island successively; The time of EDST test should be able to guarantee pressure-wave emission to the border, and flow through oil reservoir reaches steady-state flow or pseudo stable flow, and the shortest testing time of EDST is:
In the formula, μ--underground viscosity of crude Mpas
φ--reservoir pore degree decimal
Ct--system compressibility Mpa
-1
A--oil area km
2
K--mean permeability md
Prolonging test EDST comprises: 1. oil gas metering, with the synchronous continuous metering of three phases separator; Can adopt intermittently according to platform producing well number and to measure, but in month of the initial stage of operation, every day, every well should continuous metering 4-8 hour, produce stable after, every well every day continuous metering 2 hours at least; Metering simultaneously, get wellhead crude oil sample carry out moisture, contain the sand analysis; 2. well testing; At the beginning of the operation, after spurting totally, pit shaft carries out the test of static pressure and pressure build-up curve immediately, to obtain the original formation pressure data; Carry out flow-after-flow test, measure stream pressure, flow and gradient thereof, measuring pressure recovery curve again, after bringing in, each oil nozzle uses that ground directly-reading pressure system monitoring stream is pressed, stream temperature, static pressure, static temperature, static temperature gradient and pressure build-up curve are tested; After production is stable, oil well is carried out the primary system well testing, close well surveying static pressure and pressure build-up curve again; To carry out pulse test to determine the connection situation between oil well to two mouthfuls of production platforms more than the well; 3. production logging: every layer of production profile production logging that will once comprise flow, pressure, density, temperature, to carry out specific retention mensuration to producing well, the injection test well need carry out the production logging of an intake profile; 4. fluid properties monitoring: the operation initial stage must be obtained the high-voltage physics data of formation fluid, the multilayer oil-producing well is preferably obtained the formation fluid high-voltage physics data of layering; The operation initial stage should be obtained the oil gas water sample of normal pressure, and carries out oil gas water conventional project and analyze and comprehensive crude oil evaluation, isolated gas in producing is proceeded to contain C at least
7Above proximate analysis will be analyzed paraffin content and separate out temperature extraction liquid, after production is stable, carries out the proximate analysis of a conventional gas and oil water sampling analysis and production separator gas at least again; Oil well production generation has channeling, water outlet, output jumps or bust, then should be in time to the produced fluid sample analysis; The processing method of oil well produced fluid is after pit shaft spurts totally, the produced fluid of oil well is directly introduced the simple and easy crude Treatment sledge piece that is contained on offshore boring island or the subsea equipment from the well head shut-off valve, burn after gas-liquid separation, gas being caused burner, simultaneously oil water mixture is passed to the oil storage wheel through oil hose, and it is transported to land oil refinery or storage tank farm by shuttle tanker.
2, the equipment produced as a trial in early days while testing of a kind of limit drilling well, it is characterized in that this equipment comprises two point elasticity mooring gears (4), a floating oil hose (2) and a shuttle tanker (5) under water of a simple and easy production platform (1), an oil storage wheel (3), a cover mooring oil storage wheel; Described simple and easy production platform (1), can select self-elevating drilling platform, semisubmersible drilling platform or subsea equipment for use according to marine site depth of water situation, which is provided with an easy crude Treatment sledge piece of cover and a test analysis chamber that is equipped with the instrument and meter of long-term test usefulness; Described oil storage wheel (3), its tonnage are ten days extraction liquid measures of oil well and interior extraction liquid measure sum of average waiting time of marine bad weather, and between two suction anchor on lines, and its direction and seawater high current are to consistent by two point elasticity mooring gear (4) moorings under water for it; Described two point elasticity mooring gears (4) under water are made up of with the connection chain, sub-surface buoy, friction chain, nylon cable and the rapid unhooking device that are connected suction anchor and oil storage wheel two suction anchors; Described oil hose (2), its two ends are jumper hose and connect with the end of gas-liquid separator and oil storage wheel on the production platform respectively by fastener that its middle part frame floats on the sea on the floating drum of connecting and by floating drum; Described simple and easy crude Treatment sledge piece is made up of two primary separators (13,13 ＇), a second-stage separator (14), high pressure scrubber, low-pressure washer and pipeline road, pump, valve, transport to high-pressure burner by the gas that high pressure scrubber is discharged, transport to low-pressure burner by the gas that low-pressure washer is discharged.
3, the equipment produced as a trial in early days while testing of limit drilling well according to claim 2, it is characterized in that: I and II eliminator (13,13 ＇, 14) and high and low pressure washer are being housed and are being provided with grease proofing, the fuel gas probe of gas leakage, ultraviolet fire probe and fusible plug loop from the zone of 5 meters of these equipment, place in contiguous this zone is equipped with portable combustible gas detector, and foam fire pump (21), powder fire extinguisher (26), Helen's 1211 fire extinguishers should be set in the oil producing operation district; In addition, in this zone, leave the passway for escaping of sufficient size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98117960A CN1065943C (en) | 1998-09-09 | 1998-09-09 | Method and facilities for drilling well, logging and early trial production at same time |
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|---|---|---|---|
| CN98117960A CN1065943C (en) | 1998-09-09 | 1998-09-09 | Method and facilities for drilling well, logging and early trial production at same time |
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| CN1247269A CN1247269A (en) | 2000-03-15 |
| CN1065943C true CN1065943C (en) | 2001-05-16 |
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| US10332219B2 (en) * | 2009-03-30 | 2019-06-25 | Landmark Graphics Corporation | Systems and methods for determining optimum platform count and position |
| CN101852075A (en) * | 2009-04-03 | 2010-10-06 | 中国海洋石油总公司 | Oil-gas gathering and transferring treatment process of marine marginal oilfield |
| NZ599758A (en) * | 2009-11-19 | 2015-01-30 | Ian Gray Dr | System for analysing gas from strata being drilled under high mud flows |
| CN102121377B (en) * | 2011-01-05 | 2013-07-31 | 中国海洋石油总公司 | Pressure-while-drilling measuring device and measurement method thereof |
| CN102562008A (en) * | 2011-04-18 | 2012-07-11 | 熊斌辉 | Oil-gas exploration and development integrated mode for Bohai Sea |
| CN104002937B (en) * | 2014-05-08 | 2016-09-28 | 中国海洋石油总公司 | Offshore oilfield extended testing system platform |
| CN113931625A (en) * | 2020-06-29 | 2022-01-14 | 中国石油天然气股份有限公司 | Oil well ground oil testing system |
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|---|---|---|---|---|
| US4108255A (en) * | 1975-05-29 | 1978-08-22 | Smith Craig R | Well drilling apparatus |
| US4657083A (en) * | 1985-11-12 | 1987-04-14 | Halliburton Company | Pressure operated circulating valve with releasable safety and method for operating the same |
| GB2207936A (en) * | 1987-07-24 | 1989-02-15 | Forex Neptune Sa | Development drilling system |
| US4846272A (en) * | 1988-08-18 | 1989-07-11 | Eastern Oil Tolls Pte, Ltd. | Downhole shuttle valve for wells |
| CN1063082A (en) * | 1990-12-10 | 1992-07-29 | 国际壳牌研究有限公司 | Carry out the method and system of offshore well operation |
| EP0657622A2 (en) * | 1993-12-10 | 1995-06-14 | Baker Hughes Incorporated | Method and apparatus for investigating drill string stand-off and drilling fluid sound speed while drilling |
| CN1178178A (en) * | 1996-09-27 | 1998-04-08 | 深井采油技术股份有限公司 | Shallow draft floating off shore drilling/producing structure |
| CN1184451A (en) * | 1995-05-18 | 1998-06-10 | 挪威国家石油公司 | A method of loading and treatment of hydrocarbons |
-
1998
- 1998-09-09 CN CN98117960A patent/CN1065943C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4108255A (en) * | 1975-05-29 | 1978-08-22 | Smith Craig R | Well drilling apparatus |
| US4657083A (en) * | 1985-11-12 | 1987-04-14 | Halliburton Company | Pressure operated circulating valve with releasable safety and method for operating the same |
| GB2207936A (en) * | 1987-07-24 | 1989-02-15 | Forex Neptune Sa | Development drilling system |
| US4846272A (en) * | 1988-08-18 | 1989-07-11 | Eastern Oil Tolls Pte, Ltd. | Downhole shuttle valve for wells |
| CN1063082A (en) * | 1990-12-10 | 1992-07-29 | 国际壳牌研究有限公司 | Carry out the method and system of offshore well operation |
| EP0657622A2 (en) * | 1993-12-10 | 1995-06-14 | Baker Hughes Incorporated | Method and apparatus for investigating drill string stand-off and drilling fluid sound speed while drilling |
| CN1184451A (en) * | 1995-05-18 | 1998-06-10 | 挪威国家石油公司 | A method of loading and treatment of hydrocarbons |
| CN1178178A (en) * | 1996-09-27 | 1998-04-08 | 深井采油技术股份有限公司 | Shallow draft floating off shore drilling/producing structure |
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