CN2927035Y - Drilling-liquid semi-transparent film determiner - Google Patents
Drilling-liquid semi-transparent film determiner Download PDFInfo
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- CN2927035Y CN2927035Y CN 200620034702 CN200620034702U CN2927035Y CN 2927035 Y CN2927035 Y CN 2927035Y CN 200620034702 CN200620034702 CN 200620034702 CN 200620034702 U CN200620034702 U CN 200620034702U CN 2927035 Y CN2927035 Y CN 2927035Y
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Abstract
The utility model discloses an evaluation device for determining whether well liquid can form a semi permeable membrane on the sidewall rock and measuring the well liquid membrane efficiency after drilling under the condition that the high pressure liquid submerges, which uses the osmotic pressure difference caused by the method of different activities on the two sides of the permeability media with a semi permeable membrane to study the formation of the semi permeable membrane and the semi permeable membrane efficiency after forming. The utility model adopts the technical proposal that: the device adopts a bilateral symmetry structure, a gas source control valve is connected with the tops of the left, right, and intermediate containers by high pressure pipelines with feeding inlets, the intermediate container is connected with a liquid kettle through a stop valve with a pipeline, the left and right liquid kettles are connected by a core-sets pros thread, meanwhile a pressure gauge, a liquid discharge valve, an exhaust valve, and a pressure sensor are arranged on the liquid kettles, the pressure sensor is connected with a computer by USB data, and data collection procedures are arranged on the computer. The utility model is used for studying the formation of the semi permeable membrane and the semi permeable membrane efficiency after forming, suitable for studying the well liquid after drilling.
Description
Technical field
The utility model relates to a kind of judgement and floods under the condition in high pressure, liquid phase, and can drill in fluid form semi-permeable diaphragm on rock of borehole, and the semi-permeable diaphragm determinator of measuring the drill in fluid membrane efficiency, belongs to the property of drilling fluid surveying instrument.
Background technology
At present, utilize semi-permeable diaphragm theory and activity control principle to control the new approaches that water (flow) direction between stratum and the pit shaft has become a kind of anti-collapse and protection reservoir.The semi-permeable diaphragm evaluation method of domestic employing has: liquid level method, solute retention concentration determination method, scanning electron microscope method (SEM), atomic force microscopy (AFM), High Temperature High Pressure membrane efficiency determination method, swell increment determination method.Wherein, the film object that liquid level method, scanning electron microscope method (SEM), atomic force microscopy (AFM) method are measured does not form in instrument own, but the filter cake film that take out leak-off experiment back, therefore, even formed semi-permeable diaphragm on the filter cake, also may be the film that is produced by the inversion of phases separation principle owing to after the solvent evaporates drying, the film that forms under the condition be also inequality with flooding under the real well; Owing to will influence test result in the shape of molecule, concentration polarization phenomenon etc., hold back the mensuration more complicated of molecular amounts and concentration, solute retention concentration determination method is not suitable for the evaluation of drilling fluid semi-permeable diaphragm yet; It all is that the swelling pressure of utilizing mud shale to produce are estimated semi-permeable diaphragm and membrane efficiency that High Temperature High Pressure membrane efficiency determination method and swell increment are measured ratio juris.This shows, existing semi-permeable diaphragm evaluation method does not in fact all utilize the special nature (being selectivity and perviousness) of semi-permeable diaphragm to be used as the evaluation index of film existence and membrane efficiency, major part method is not considered membrance casting condition at all, directly with the solid film that forms under the atmospheric environment as evaluation object, and do not consider that semi-permeable diaphragm that drilling fluid forms is to flood in high pressure, liquid phase that condition is following to be formed, therefore, how to judge effectively that the existence of semi-permeable diaphragm and mensuration membrane efficiency have become this technology problem demanding prompt solution.
Summary of the invention
The purpose of this utility model is: under liquid phase is flooded environment, pressure is in 0 to the 3.5MPa scope, utilization has the permeable pressure head that solution produced of the different activity in permeating medium (rock core) two ends of semi-permeable diaphragm, study the formation of semi-permeable diaphragm and form back semipermeable membrane efficiency height, the spy provides a kind of drilling fluid semi-permeable diaphragm determinator.
Ultimate principle of the present utility model is: selectivity and perviousness are the inherent features of semi-permeable diaphragm, when separating the solution (or a kind of pure solution and a kind of solute) of two kinds of variable concentrations with semi-permeable diaphragm, since film allow solvent by and do not allow solute to pass through, so can produce osmotic pressure.If the film two ends have produced osmotic pressure, then this film must be semi-permeable diaphragm.Therefore, constitute research system,, observe the variation of both sides pressure reduction after the balance filtration media two ends pack into distilled water and salt solution by pure water, salt solution and rock core.If both sides pressure reduction is zero after the balance, illustrate that there is not semi-permeable diaphragm in medium, promptly medium can allow inorganic electrolyte pass through; If there is permeable pressure head in the rock core two ends after the balance, illustrate that then there is semi-permeable diaphragm in medium.The osmotic pressure extent depends on the degree of perfection of semi-permeable diaphragm, the kind and the concentration of salt solution.When recording maximum permeable pressure head, estimate the membrane efficiency of simulated solution by following formula:
In the formula, σ is the membrane efficiency of drilling fluid; p
1And p
2Be respectively the theoretical osmotic pressure and the actual osmotic pressure of rock sample, the maximum permeable pressure head Δ p that actual osmotic pressure promptly records; R is gas law constant (0.082Latmmol
-1K
-1); T is an absolute temperature, K; V
wBe the partial molar volume of pure water, 0.018L/mol; α
w Fo, α
w DfBe respectively the water activity of rock sample and simulated solution.
To achieve these goals, the technical solution adopted in the utility model is: a kind of drilling fluid semi-permeable diaphragm determinator, mainly form by air pressure valve assembly, intermediate receptacle, stop valve, rock core cover, liquid holding rector and data acquisition system (DAS), it is characterized in that: the structure of this device adopts the left-right symmetric structure, source of the gas pressure regulator valve 1 links by high pressure line and left and right sides intermediate receptacle 3 tops, provides experiment needed pressure; There is charging aperture 2 on intermediate receptacle 3 tops, seal with screw plug after charging finishes; Intermediate receptacle 3 connects with liquid holding rector 9 usefulness pipelines, and stop valve 7 is installed in the middle of the pipeline; Left and right sides liquid holding rector 9 overlaps 8 positive and negative screw threads by rock core and connects, and tensimeter 4 is installed simultaneously, tapping valve 10, vent valve 6 and pressure transducer 5 on the left and right sides liquid holding rector 9; Pressure transducer 5 is crossed usb data with the computer expert and is connected, and data acquisition program 11 (DEMO) is installed on computers, and the pressure that this program can be monitored in two liquid holding rectors 9 more accurately changes.
The beneficial effects of the utility model are: (1) this device by the semi-permeable diaphragm both sides permeable pressure head and cross existence and the membrane efficiency thereof that the membrane volume amount reflects semi-permeable diaphragm, considered that drilling fluid is at high pressure, liquid phase is flooded the following semi-permeable diaphragm that forms of condition, has more authenticity, accuracy; (2) this apparatus structure is simple, is used to study the formation of semi-permeable diaphragm and forms back semipermeable membrane efficiency height, is suitable for drilling well research department and slurry chamber and uses.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is the structural representation of the utility model drilling fluid semi-permeable diaphragm determinator.This structural drawing is the left-right symmetric structure.Among the figure: 1. pressure regulator valve, 2. charging aperture, 3. intermediate receptacle, 4. tensimeter, 5. pressure transducer, 6. vent valve, 7. stop valve, 8. rock core cover, 9. liquid holding rector, 10. tapping valve, 11. data acquisition system (DAS)s.
Embodiment
The gravel of screening different meshes mixes with native powder by a certain percentage earlier, adds certain quantity of additive, in the rock core of packing into after the mixing cover 8.After 10 minutes, removal of core overlapped for 8 (containing rock core) in compacting under the pressure of 20MPa; Under 50 ℃ condition the oven dry 3 hours standby.With the liquid holding rector 9 employings positive and negative thread connection of rock core cover 8 with left and right two ends.Close the tapping valve 10 of right-hand member, open the stop valve 7 of right-hand member again, open the plug on the right-hand member charging aperture 2, the 500ml distilled water of packing into, and close the plug of charging aperture 2.Open vent valve 6, regulate pressure regulator valve 1, send into little pressure and when vent valve 6 has water to overflow continuously, close vent valve 6; Pressure rises to 1MPa, when the rock core left end has water to ooze out, opens the 2 plug pressure releases of right-hand member charging aperture; Open right-hand member tapping valve 10 simultaneously and emit distilled water, the back removal of core from rock core cover 8 that finishes that discharges water is put into distilled water and was soaked 5 hours.Take by weighing a certain amount of film forming agent and NaCl again and dissolve in 500ml distilled water, stirred 30 minutes, obtain simulated solution.Rock core after soaking is put into rock core cover 8,9 airtight connections of liquid holding rector of rotation rock core cover 8 and left and right end, close two ends tapping valve 10, the charging aperture 2 and the stop valve 7 at two ends, the left and right sides are opened simultaneously, respectively at left end charging aperture 2 simulated solution of packing into; The right-hand member charging aperture 2 500ml distilled water of packing into.Close two ends charging aperture 2 then, open two ends vent valve 6, regulate pressure regulator valve 1, in addition a little pressure is to discharge the gas in the liquid holding rector 9.Open computer, open data acquisition program DEMO, select Taoist monastic name " a11 " that reference mark " 50 " is set, select testing range " others ", data acquisition time is " 1000ms ".After pressure in the two ends liquid holding rector 9 are transferred to 3.5Mpa, and block source of the gas, close stop valve 7.Click " data acquisition " system on the test procedure, promptly begin image data, click " preservation data " button simultaneously and preserve data.Observe the real time data curve, when two curves no longer change, record maximum permeable pressure head, stop data acquisition, withdraw from test procedure.Open tapping valve 10, emit two ends liquid, and release pressure, removal of core cover 8 cleans liquid holding rector 9.By the membrane efficiency computing formula, calculate the membrane efficiency of simulated solution at last.
Claims (1)
1. drilling fluid semi-permeable diaphragm determinator, mainly form by air pressure valve assembly, intermediate receptacle, stop valve, rock core cover, liquid holding rector and data acquisition system (DAS), it is characterized in that: the structure of this device adopts the left-right symmetric structure, and source of the gas pressure regulator valve (1) links by high pressure line and left and right sides intermediate receptacle (3) top; There is charging aperture (2) on intermediate receptacle (3) top, seals with screw plug; Intermediate receptacle (3) connects with pipeline with liquid holding rector (9), and stop valve (7) is installed in the middle of the pipeline; Left and right sides liquid holding rector (9) connects by the positive and negative screw thread of rock core cover (8), and tensimeter (4) is installed on the left and right sides liquid holding rector (9) simultaneously, tapping valve (10), vent valve (6) and pressure transducer (5); Pressure transducer (5) is crossed usb data with the computer expert and is connected, and data acquisition program (11) DEMO is installed on computers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034702 CN2927035Y (en) | 2006-06-21 | 2006-06-21 | Drilling-liquid semi-transparent film determiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034702 CN2927035Y (en) | 2006-06-21 | 2006-06-21 | Drilling-liquid semi-transparent film determiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2927035Y true CN2927035Y (en) | 2007-07-25 |
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ID=38281288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620034702 Expired - Fee Related CN2927035Y (en) | 2006-06-21 | 2006-06-21 | Drilling-liquid semi-transparent film determiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2927035Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858845A (en) * | 2010-06-04 | 2010-10-13 | 徐州工程学院 | Direct-reading osmotic pressure tester and osmotic pressure testing method |
| CN101865754A (en) * | 2010-07-20 | 2010-10-20 | 哈尔滨工业大学 | Device for detecting gas tightness of composite material laminated plate |
| CN102128837A (en) * | 2011-01-08 | 2011-07-20 | 中国石油大学(华东) | Real-time acquisition experimental device for flowing foam structural images in porous media |
| CN103562703A (en) * | 2011-05-26 | 2014-02-05 | 罗伯特·博世有限公司 | Sensor for detecting the quality of fluid |
| CN108152330A (en) * | 2017-11-14 | 2018-06-12 | 中国石油天然气股份有限公司 | Measure experimental system and method that infiltration voltage influences shale |
| CN110748339A (en) * | 2018-07-24 | 2020-02-04 | 中石化石油工程技术服务有限公司 | Method for stabilizing shale formation by adjusting drilling fluid activity |
| CN110231258B (en) * | 2019-04-18 | 2020-09-04 | 中国石油大学(北京) | Experimental device and method for testing shale reservoir osmotic pressure |
| CN113218832A (en) * | 2020-02-04 | 2021-08-06 | 中国石油天然气股份有限公司 | Shale osmotic pressure simulation generation device, measurement experiment system and method |
-
2006
- 2006-06-21 CN CN 200620034702 patent/CN2927035Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858845A (en) * | 2010-06-04 | 2010-10-13 | 徐州工程学院 | Direct-reading osmotic pressure tester and osmotic pressure testing method |
| CN101865754A (en) * | 2010-07-20 | 2010-10-20 | 哈尔滨工业大学 | Device for detecting gas tightness of composite material laminated plate |
| CN101865754B (en) * | 2010-07-20 | 2012-11-21 | 哈尔滨工业大学 | Method for detecting gas tightness of composite material laminated plate |
| CN102128837A (en) * | 2011-01-08 | 2011-07-20 | 中国石油大学(华东) | Real-time acquisition experimental device for flowing foam structural images in porous media |
| CN102128837B (en) * | 2011-01-08 | 2012-08-22 | 中国石油大学(华东) | Real-time acquisition experimental device for flowing foam structural images in porous media |
| CN103562703A (en) * | 2011-05-26 | 2014-02-05 | 罗伯特·博世有限公司 | Sensor for detecting the quality of fluid |
| CN103562703B (en) * | 2011-05-26 | 2016-06-01 | 罗伯特·博世有限公司 | For detecting the sensor of fluid quality |
| CN108152330A (en) * | 2017-11-14 | 2018-06-12 | 中国石油天然气股份有限公司 | Measure experimental system and method that infiltration voltage influences shale |
| CN110748339A (en) * | 2018-07-24 | 2020-02-04 | 中石化石油工程技术服务有限公司 | Method for stabilizing shale formation by adjusting drilling fluid activity |
| CN110748339B (en) * | 2018-07-24 | 2022-12-23 | 中石化石油工程技术服务有限公司 | Method for stabilizing shale formation by adjusting drilling fluid activity |
| CN110231258B (en) * | 2019-04-18 | 2020-09-04 | 中国石油大学(北京) | Experimental device and method for testing shale reservoir osmotic pressure |
| CN113218832A (en) * | 2020-02-04 | 2021-08-06 | 中国石油天然气股份有限公司 | Shale osmotic pressure simulation generation device, measurement experiment system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070725 Termination date: 20100621 |