US20010035043A1 - Gas analyzer - Google Patents
Gas analyzer Download PDFInfo
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- US20010035043A1 US20010035043A1 US09/801,554 US80155401A US2001035043A1 US 20010035043 A1 US20010035043 A1 US 20010035043A1 US 80155401 A US80155401 A US 80155401A US 2001035043 A1 US2001035043 A1 US 2001035043A1
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- United States
- Prior art keywords
- time period
- loop
- gas
- chromatograph
- total gas
- Prior art date
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- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 77
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 2
- 238000003756 stirring Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000012190 activator Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 241001572351 Lycaena dorcas Species 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- -1 isabutane Chemical compound 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2823—Raw oil, drilling fluid or polyphasic mixtures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
Definitions
- This invention relates to analyzing gas from the mud produced by drilling an oil well.
- Oil well drilling mud is forced in the drill pipe into the bore hole and circulated from the bit back to the surface of ground.
- a certain amount of the light gases in the methane series make their way into the mud stream.
- these gases are analyzed.
- the technique of capturing the gases from the mud is well known in the art. Drilling superintendent have ordinary skill in this, the gas analyzing art.
- the total gas from the mud pit was analyzed by a sperate instrument named Total Gas Analyzer (TGA) to determine the total amount of gases produced. Also the amount of each individual gas was determined by a second instrument named a Chromatograph (CG). That is, the quantity of methane, ethane, propane, isabutane, butane and pentane were each measured by the chromatograph as to the amount each was present.
- TGA Total Gas Analyzer
- This invention combines the two instruments into one small unit. With a single unit the total gas produced and the amount of each gas is determined.
- the only lines to the gas analyzer of this invention are a single gas line from the mud pit and a single electric power line.
- the results of analysis are automatically continually available. The results may be recorded every 5 minuets.
- An object of this invention is to continually measure the volume and increase the accuracy of the measurements of the gas.
- an object of this invention is to quickly and accurately analyze the gas by a compact instrument which does not require excessive space upon the drilling platform.
- FIG. 1 is a schematic representation of the analyzer.
- FIG. 2 is a schematic representation of the sample valve showing the flows and connections in the 292 second mode.
- FIG. 3 is a schematic representation of the sample valve showing the flows and connections in the 8 second mode.
- the drawing shows atmospheric air is pumped by a pump (not shown), into the system at intake 10 .
- the air flows through a T-joint 12 at a timer valve 14 .
- the majority of the air passes on through line 16 with silica gel scrubber 17 to the pressure regulator 18 .
- the air from the pump will be at about 9 psig in the line 16 .
- the scrubber is well known to the art and prevents foreign material from fouling precision equipment.
- Pressure regulator 18 will reduce the pressure to precisely 8 psig into line 20 which extends to sample valve 22 .
- Gage 30 displays the pressure in line 20 .
- the sample valve 22 will feed a precise predetermined sample to Total Gas Analyzer TGA 56 by line 50 from the sample valve 22 .
- the sample valve 22 will have seven ports identified as AIR IN PORT 1 , TGA PORT 2 , LOOP PORT 3 , LOOP PORT 4 , GAS IN PORT 5 , CG PORT 6 and GAS IN PORT 7 .
- the line 20 is connected to AIR IN PORT 1 .
- the gas from the mud pit is captured as shown at pit 32 .
- the gas will be captured at a rate anywhere from 3 standard cubic feet an hour (scfh) to 10 scfh. Normally it will be adjusted to capture about 6 scfh.
- Flow control valve 34 will be set to have an output of 6 scfh.
- the output of the flow control valve 34 is split by T-joint 36 with the line 38 going to flow control valve 40 which will exhaust 3 scfh to exhaust through line 42 .
- Line 44 from the T-joint 36 will therefore also carry 3 scfh.
- the line 44 is connected to GAS IN PORT 5 at T-joint 46 .
- the other exit of the T-joint 46 is connected to line 48 which is connected to GAS IN PORT 7 .
- the GAS IN PORT 7 is connected to the TGA PORT 2 and the LOOP PORT 4 .
- the LOOP PORT 3 is externally connected by loop 62 to LOOP PORT 4 .
- GAS IN PORT 5 is connected to LOOP PORT 3 .
- gas from the mud pit 32 circulates through the loop 62 as well as directly into the total gas analyzer 54 during the 292 second mode. Stated otherwise, these are parallel paths for the gas to flow from line 44 into the total gas analyzer.
- One path is from GAS IN PORT 7 to TGA PORT 2 .
- the other path, something called the loop path, is from GAS IN PORT 5 through loop 62 and into TGA PORT 2 .
- the sample valve body 22 has an internal orifice 31 in the form of a small diameter bore permanently connecting the AIR IN PORT 1 .
- the pressure in the line 20 is fixed by the pressure regulator 18 and monitored by the gage 30 .
- the air flows from AIR IN PORT 1 to CG PORT 6 in the 292 second mode (normal position).
- TGA PORT 2 is connected to line 50 which extends to flow control valve 52 .
- the flow in line 50 will be 1 scfh.
- the flow control valve 52 will maintain the flow in line 54 at 1 scfh.
- This line 54 is connected to the total gas analyzer 56 .
- the timer valve 14 is controlled by a timer (not shown) so that every 5 min. it activates to open the timer valve so that line 58 is connected to the line 16 for eight (8) seconds.
- the line 58 will carry at least 8 psig and be connected to activator 60 of the sample valve 22 .
- the activator will move a diaphragm which will shift a plunger in the sample valve which will change the connections of the ports.
- FIG. 3 shows the connections in the valve 22 during the 8 seconds mode (also called closed position).
- the preferred form of the sample valve is a plunger running through a sleeve. O-rings on the plunger fit along the sleeve so that when the plunger is moved by the activator 60 that it will make the connections as described. However other means could be made to make these connections.
- the plunger type operation is preferred because of its compact size.
- GAS IN PORT 5 is not connected within the valve 22 .
- GAS IN PORT 7 is connected to TGA PORT 2 . Therefore there will be a continual flow of gas through this path to the total gas analyzer 56 .
- the AIR IN PORT 1 is shifted from CG PORT 6 and connected to LOOP PORT 3 through the orifice 31 .
- CG PORT 6 will be connected to LOOP PORT 4 .
- LOOP PORT 3 and LOOP PORT 4 are connected by loop 62 .
- Timer valves are well known.
- the preferred timer valve is the Mini Myte manufactured by Humphries Mfg. Co. Box 2008 Kalamazoo Mich. 49003.
- the timer (not shown) for the timer valve is preferred to be the timer made by Industrial Timer Inc. Centerbrook, Conn. 06409.
- the equipment is designed to be operated electrically at 2 volts dc.
- a converter not shown, produces 2 volt dc from 110 voltage ac source.
- the separator column 28 is made of copper 1 ⁇ 4 in. O.D. copper tubing 70 inches in length. It is coiled to conserve space. The column is packed with granulated diabutial phthilate, a product manufactured by Kodak Chemical of Rochester N.Y. It is provided as a liquid rubber.
- the packing material is prepared by use of laboratory grade chromosorb P which has not been acid washed (known as non-acid wash).
- the chromosorb P is crushed and used at a size of 60-80 mesh.
- a mixture of enough acetone to throughly mix with the diabutial phthilate is prepared.
- enough of this mixture is poured over the crushed chromosorb P non-acid wash to completely coat the crushed chromosorb P. It is stirred until the acetone is evaporated.
- small particles or granules are produced having a diabutial phthilate coating.
- the chromatograph will measure the first gas to be released from the column 28 which will be the methane. After the methane is measured, the second gas to be released from the separator will be ethane, after it is measured the next will be propane and so forth to pentane.
- the measurement of the amount of gases is the same in the total gas analyzer and the chromatograph. That is to say, the gases are measured by the heat units they produce as they are flowed over a heated special material. Traditionally the material was platinum.
- the preferred material is thermistor beads.
- the thermistor beads are a product of J. J. Enterprises in Baton Rough, La.
- calibration inject 64 provides for a known sample of the gases may be injected into the air stream of the line 26 during 292 second mode. They would be carried to the separator 28 and the results shown at the chromatograph 24 . However this is standard on substantially all gas analyzers.
- timing valve may be manually energized to take a reading. Also if the total gas analyzer indicates an extreme sudden increase of the gas produced, a special chromatograph reading may be produced responsive to the extreme sudden increase. Those with ordinary skill in the art could readily provide such a response.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
- The applicant claims the benefit of his U.S. Provisional Application No. 60/189,102 filed Mar. 14, 2000.
- (1) Field of the Invention
- This invention relates to analyzing gas from the mud produced by drilling an oil well.
- Oil well drilling mud is forced in the drill pipe into the bore hole and circulated from the bit back to the surface of ground. When the drill bit is in a zone wherein petroleum is present, a certain amount of the light gases in the methane series make their way into the mud stream. When the mud stream is circulated to the surface these gases are analyzed. The technique of capturing the gases from the mud is well known in the art. Drilling superintendent have ordinary skill in this, the gas analyzing art.
- (2) Description of the Related Art
- Before this invention, the total gas from the mud pit was analyzed by a sperate instrument named Total Gas Analyzer (TGA) to determine the total amount of gases produced. Also the amount of each individual gas was determined by a second instrument named a Chromatograph (CG). That is, the quantity of methane, ethane, propane, isabutane, butane and pentane were each measured by the chromatograph as to the amount each was present.
- (1) Progressive Contribution to the Art
- This invention combines the two instruments into one small unit. With a single unit the total gas produced and the amount of each gas is determined.
- The only lines to the gas analyzer of this invention are a single gas line from the mud pit and a single electric power line.
- The results of analysis are automatically continually available. The results may be recorded every 5 minuets.
- (2) Objects of this Invention
- An object of this invention is to continually measure the volume and increase the accuracy of the measurements of the gas.
- Also an object of this invention is to quickly and accurately analyze the gas by a compact instrument which does not require excessive space upon the drilling platform.
- Other objects are to achieve the above with an instrument that is easy to operate by workers having little skill in electronics, physics, or chemistry.
- Further objects are to achieve the above with devices that are sturdy, compact, durable, lightweight, simple, safe, efficient, versatile, ecologically compatible, low maintance, energy conserving, and reliable, yet inexpensive and easy to manufacture, install, operate, and maintain.
- Other objects are to achieve the above with a method that is rapid, versatile, ecologically compatible, energy conserving, efficient, and inexpensive, and does not require highly skilled people to install, operate, and maintain.
- The specific nature of the invention, as well as other objects, uses, and advantages thereof, will clearly appear from the following description and from the accompanying drawings, the different views of which are not necessarily scale drawings.
- FIG. 1 is a schematic representation of the analyzer.
- FIG. 2 is a schematic representation of the sample valve showing the flows and connections in the 292 second mode.
- FIG. 3 is a schematic representation of the sample valve showing the flows and connections in the 8 second mode.
- As an aid to correlating the terms of the claims to the exemplary drawing(s), the following catalog of elements and steps is provided:
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- The drawing shows atmospheric air is pumped by a pump (not shown), into the system at
intake 10. The air flows through a T-joint 12 at atimer valve 14. The majority of the air passes on throughline 16 withsilica gel scrubber 17 to thepressure regulator 18. The air from the pump will be at about 9 psig in theline 16. The scrubber is well known to the art and prevents foreign material from fouling precision equipment.Pressure regulator 18 will reduce the pressure to precisely 8 psig intoline 20 which extends to samplevalve 22.Gage 30 displays the pressure inline 20. - As will be explained later, the
sample valve 22 will feed a precise predetermined sample to TotalGas Analyzer TGA 56 byline 50 from thesample valve 22. - Describing the
sample valve 22 in detail: the sample valve will have seven ports identified as AIR INPORT 1,TGA PORT 2,LOOP PORT 3,LOOP PORT 4, GAS INPORT 5,CG PORT 6 and GAS INPORT 7. Theline 20 is connected to AIR INPORT 1. - In the normal position, which is the position of the sample valve for 4 min. and 52 seconds (292 seconds) of each 5 min, the AIR IN
PORT 1 will be connected toCG PORT 6 throughorifice 31. Stated otherwise, in the normal position of thesample valve 22, AIR INPORT 1 will be connected toCG PORT 6 and the air will flow throughline 26, throughcolumn 28, and through the chromatograph (CG)24. Therefore the majority of time there will be air flowing through thechromatograph 24. - The gas from the mud pit is captured as shown at
pit 32. As stated before the process of capturing gas from the mud pit is well known in the art. The gas will be captured at a rate anywhere from 3 standard cubic feet an hour (scfh) to 10 scfh. Normally it will be adjusted to capture about 6 scfh.Flow control valve 34 will be set to have an output of 6 scfh. The output of theflow control valve 34 is split by T-joint 36 with theline 38 going to flowcontrol valve 40 which will exhaust 3 scfh to exhaust throughline 42.Line 44 from the T-joint 36 will therefore also carry 3 scfh. - The
line 44 is connected to GAS INPORT 5 at T-joint 46. The other exit of the T-joint 46 is connected to line 48 which is connected to GAS INPORT 7. - Referring to FIG. 2 in normal position (292 second mode) the GAS IN
PORT 7 is connected to theTGA PORT 2 and theLOOP PORT 4. TheLOOP PORT 3 is externally connected byloop 62 toLOOP PORT 4. - Also GAS IN
PORT 5 is connected toLOOP PORT 3. Thus, gas from themud pit 32 circulates through theloop 62 as well as directly into thetotal gas analyzer 54 during the 292 second mode. Stated otherwise, these are parallel paths for the gas to flow fromline 44 into the total gas analyzer. One path is fromGAS IN PORT 7 toTGA PORT 2. The other path, something called the loop path, is fromGAS IN PORT 5 throughloop 62 and intoTGA PORT 2. - The
sample valve body 22 has aninternal orifice 31 in the form of a small diameter bore permanently connecting the AIR INPORT 1. As stated above, the pressure in theline 20 is fixed by thepressure regulator 18 and monitored by thegage 30. By this arrangement the air flows from AIR INPORT 1 toCG PORT 6 in the 292 second mode (normal position). -
TGA PORT 2 is connected to line 50 which extends to flowcontrol valve 52. The flow inline 50 will be 1 scfh. Theflow control valve 52 will maintain the flow inline 54 at 1 scfh. Thisline 54 is connected to thetotal gas analyzer 56. - The
timer valve 14 is controlled by a timer (not shown) so that every 5 min. it activates to open the timer valve so thatline 58 is connected to theline 16 for eight (8) seconds. Theline 58 will carry at least 8 psig and be connected to activator 60 of thesample valve 22. The activator will move a diaphragm which will shift a plunger in the sample valve which will change the connections of the ports. - FIG. 3 shows the connections in the
valve 22 during the 8 seconds mode (also called closed position). - The preferred form of the sample valve is a plunger running through a sleeve. O-rings on the plunger fit along the sleeve so that when the plunger is moved by the
activator 60 that it will make the connections as described. However other means could be made to make these connections. The plunger type operation is preferred because of its compact size. - During this 8 sec. time (when the sample valve is in the closed condition) the
LOOP PORT 4 is shifted from GAS INPORT 7 toCG PORT 6. - The GAS IN
PORT 5 is not connected within thevalve 22. GAS INPORT 7 is connected toTGA PORT 2. Therefore there will be a continual flow of gas through this path to thetotal gas analyzer 56. - Also the AIR IN
PORT 1 is shifted fromCG PORT 6 and connected toLOOP PORT 3 through theorifice 31. -
CG PORT 6 will be connected toLOOP PORT 4.LOOP PORT 3 andLOOP PORT 4 are connected byloop 62. - During normal time (292 second mode) the
loop 62 will be loaded with gas from GAS INPORT 7 connected toLOOP PORT 4 as described above. - At the time when the valve is switched from normal to closed position (FIG. 3), the gas within this path, the
loop 62, will be expelled throughLOOP PORT 4 connected to theCG PORT 6. The air from AIR INPORT 1 will flow through theorifice 31 intoLOOP PORT 3. The air will push the accumulated gas in this path, theloop 62, out through theCG PORT 6 which will take the gas through theseparator 28 andchromatograph 24. The chromatograph will show the amounts of each of the gases present. - At the end of the 8 second mode, the timer on
valve 14 will closevalve 22 and the 292 second mode will start. - Timer valves are well known. The preferred timer valve is the Mini Myte manufactured by Humphries Mfg. Co. Box 2008 Kalamazoo Mich. 49003. The timer (not shown) for the timer valve is preferred to be the timer made by Industrial Timer Inc. Centerbrook, Conn. 06409.
- The equipment is designed to be operated electrically at 2 volts dc. A converter, not shown, produces 2 volt dc from 110 voltage ac source.
- The
separator column 28 is made of copper ¼ in. O.D. copper tubing 70 inches in length. It is coiled to conserve space. The column is packed with granulated diabutial phthilate, a product manufactured by Kodak Chemical of Rochester N.Y. It is provided as a liquid rubber. - The packing material is prepared by use of laboratory grade chromosorb P which has not been acid washed (known as non-acid wash). The chromosorb P is crushed and used at a size of 60-80 mesh. Next, a mixture of enough acetone to throughly mix with the diabutial phthilate, is prepared. Then enough of this mixture is poured over the crushed chromosorb P non-acid wash to completely coat the crushed chromosorb P. It is stirred until the acetone is evaporated. Thus small particles or granules are produced having a diabutial phthilate coating.
- Good results are obtained with one (1) unit by weight diabutial phthilate mixed with four (4) units by weight of acetone. This mixture poured over two (2) units by weight of crushed chromosorb P.
- The packing thus prepared is placed into the copper tubing forming the
separation column 28. - As is well known, the chromatograph will measure the first gas to be released from the
column 28 which will be the methane. After the methane is measured, the second gas to be released from the separator will be ethane, after it is measured the next will be propane and so forth to pentane. - The measurement of the amount of gases is the same in the total gas analyzer and the chromatograph. That is to say, the gases are measured by the heat units they produce as they are flowed over a heated special material. Traditionally the material was platinum. The preferred material is thermistor beads. The thermistor beads are a product of J. J. Enterprises in Baton Rough, La.
- Many different features may be included which are not essential for normal use. For example calibration inject64 provides for a known sample of the gases may be injected into the air stream of the
line 26 during 292 second mode. They would be carried to theseparator 28 and the results shown at thechromatograph 24. However this is standard on substantially all gas analyzers. - Also in the event that there was some possibility there would be sufficient amounts of gases to cause the total gas analyzer to go off the scale, (exceed its capacity) then it is possible to have an air dilution stream connected from an air flow to the
flow control valve 52. An equal amount of air is pumped intoflow control valve 66. Therefore diluting the sample going to the total gas analyzer to one half the otherwise calculated value. - It will be understood that the drawing is schematic drawing. On the apparatus the information produced by the total gas analyzer and the chromatograph, and other items will be displayed on a front panel for open inspection.
- Although the equipment is described as obtaining a chromatograph reading each five minuets, some events of drilling may make a special immediate chromatograph reading desirable.
- Although it is not shown the timing valve may be manually energized to take a reading. Also if the total gas analyzer indicates an extreme sudden increase of the gas produced, a special chromatograph reading may be produced responsive to the extreme sudden increase. Those with ordinary skill in the art could readily provide such a response.
- The embodiment shown and described above is only exemplary. I do not claim to have invented all the parts, elements or steps described. Various modifications can be made in the construction, material, arrangement, and operation, and still be within the scope of my invention.
- The restrictive description and drawings of the specific examples above do not point out what an infringement of this patent would be, but are to point out the advantages and the progressive contribution to the art of analyzing the gas produced in oil well drilling and to enable one skilled in the art to make and use the invention. The limits of the invention and the bounds of the patent protection are measured by and defined in the following claims.
Claims (13)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/801,554 US6374668B2 (en) | 2000-03-14 | 2001-03-08 | Gas analyzer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US18910200P | 2000-03-14 | 2000-03-14 | |
US09/801,554 US6374668B2 (en) | 2000-03-14 | 2001-03-08 | Gas analyzer |
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US20010035043A1 true US20010035043A1 (en) | 2001-11-01 |
US6374668B2 US6374668B2 (en) | 2002-04-23 |
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Cited By (4)
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WO2009055272A1 (en) * | 2007-10-23 | 2009-04-30 | Dean John Richards | Improved gas analyzer |
CN105716992A (en) * | 2016-02-19 | 2016-06-29 | 中国石油大学(华东) | Measuring method for gasification rates of heavy oil at outlet temperature of heating furnace |
CN106950147A (en) * | 2017-05-04 | 2017-07-14 | 中国石油大学(华东) | The micro evaluating apparatus and method of a kind of heavy oil catalytic pyrolysis performance |
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FR2815074B1 (en) * | 2000-10-10 | 2002-12-06 | Inst Francais Du Petrole | METHOD OF CHEMICAL AND ISOTOPIC ANALYSIS AND MEASUREMENT ON COMPONENTS TRANSPORTED BY A DRILLING FLUID |
US20060202122A1 (en) * | 2005-03-14 | 2006-09-14 | Gunn Scott E | Detecting gas in fluids |
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US2489180A (en) * | 1939-04-01 | 1949-11-22 | John T Hayward | Method of detecting gas in well drilling fluids |
US2341169A (en) * | 1940-12-30 | 1944-02-08 | Nat Lead Co | Method and apparatus for detecting gas in well drilling fluids |
US3050449A (en) * | 1959-06-03 | 1962-08-21 | Nat Lead Co | Hydrocarbon sampling |
US4635735A (en) * | 1984-07-06 | 1987-01-13 | Schlumberger Technology Corporation | Method and apparatus for the continuous analysis of drilling mud |
US4887464A (en) * | 1988-11-22 | 1989-12-19 | Anadrill, Inc. | Measurement system and method for quantitatively determining the concentrations of a plurality of gases in drilling mud |
FR2646508B1 (en) * | 1989-04-26 | 1994-04-29 | Geoservices | METHOD AND APPARATUS FOR CONTINUOUSLY TAKING GASEOUS SAMPLES CONTAINED IN A LIQUID ALSO LOADED WITH SOLIDS, ESPECIALLY IN AN OIL DRILLING MUD |
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US5447052A (en) * | 1992-11-23 | 1995-09-05 | Texaco Inc. | Microwave hydrocarbon gas extraction system |
US5469917A (en) * | 1994-12-14 | 1995-11-28 | Wolcott; Duane K. | Use of capillary-membrane sampling device to monitor oil-drilling muds |
US5648603A (en) * | 1995-12-04 | 1997-07-15 | Texaco Inc. | Method and apparatus for stabilizing a quantitative measurement gas trap used in a drilling operation |
CA2236615C (en) * | 1998-04-30 | 2006-12-12 | Konstandinos S. Zamfes | Differential total-gas determination while drilling |
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2001
- 2001-03-08 US US09/801,554 patent/US6374668B2/en not_active Expired - Lifetime
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US20100212399A1 (en) * | 2007-10-23 | 2010-08-26 | Dean John Richards | Gas analyzer |
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US8342004B2 (en) | 2007-10-23 | 2013-01-01 | Dean John Richards | Gas analyzer |
CN105716992A (en) * | 2016-02-19 | 2016-06-29 | 中国石油大学(华东) | Measuring method for gasification rates of heavy oil at outlet temperature of heating furnace |
CN106950147A (en) * | 2017-05-04 | 2017-07-14 | 中国石油大学(华东) | The micro evaluating apparatus and method of a kind of heavy oil catalytic pyrolysis performance |
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