CN104919137A - Downhole electromagnetic telemetry apparatus - Google Patents

Downhole electromagnetic telemetry apparatus Download PDF

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Publication number
CN104919137A
CN104919137A CN201380058061.7A CN201380058061A CN104919137A CN 104919137 A CN104919137 A CN 104919137A CN 201380058061 A CN201380058061 A CN 201380058061A CN 104919137 A CN104919137 A CN 104919137A
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CN
China
Prior art keywords
short section
inserting tube
insulating short
towards
isolated layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380058061.7A
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Chinese (zh)
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CN104919137B (en
CN104919137A8 (en
Inventor
阿伦·W·洛根
帕特里克·R·德尔卡茨
贾斯廷·C·洛根
大卫·A·斯维策尔
吉利(杰里)·刘
穆杰塔巴·卡齐米
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Evolution Engineering Inc
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Evolution Engineering Inc
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Publication of CN104919137A publication Critical patent/CN104919137A/en
Publication of CN104919137A8 publication Critical patent/CN104919137A8/en
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Publication of CN104919137B publication Critical patent/CN104919137B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/003Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/01Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00Survey of boreholes or wells
    • E21B47/12Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/13Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling by electromagnetic energy, e.g. radio frequency

Abstract

An assembly for use in subsurface drilling includes a downhole probe having an EM telemetry signal generator and electrical contacts for carrying telemetry signals from the EM telemetry signal generator to first and second parts of a gap sub in a drill string. An outside surface of the probe and an inside surface of the gap sub are covered with layers of electrically-insulating material. Electrical conduction paths internal to the gap sub are removed, thereby increasing efficiency of EM telemetry.

Description

Downhole electromagnetic telemetering equipment
The reference of related application
This application claims the U. S. application No.61/723 submitted on November 6th, 2012, the priority of 286.For the U.S., the application according to 35U.S.C § 119 require to submit on November 6th, 2012 and title is the U. S. application No.61/723 of DOWNHOLE ELECTROMAGNETIC TELEMETRY APPARATUS (downhole electromagnetic telemetering equipment), the rights and interests of 286, for its content is incorporated to herein by reference by various object.
Technical field
The application relates to subterranean well, relates to the device for taking remote measurement to the information from down well placement particularly.Embodiment is applicable to the drilling well obtaining hydrocarbon.
Background technology
The process that hydrocarbon relies on drilling well cylinder is obtained from subterranean zone.
By using the drilling equipment of location, earth's surface to form pit shaft, this drilling equipment drives drill string, and drill string finally extends to interested stratum or subterranean zone from surface equipment.Drill string can on earth's surface with downward-extension several thousand feet or thousands of rice.The end of drill string comprises the drill bit for getting out pit shaft (or making shaft stretch).Usually the drilling fluid in drilling well " mud " form is pumped through drill string usually.Drilling fluid carries out Cooling and Lubricator to drill bit and carries drilling cuttings returning to ground.Drilling fluid can also be used for helping control well bottom pressure, flows into pit shaft and the ejection possible on earth's surface to suppress hydrocarbon from stratum.
Bottom hole assembly (bottom hole assembly, BHA) is the title of specifying for the equipment at the extreme ends place of drill string.Except drill bit, BHA also can comprise element such as: for handling the device (such as, steerable downhole mud motor or rotary steerable system) of drilling direction; For measuring the sensor (sensor such as, used in well logging) of the characteristic of geological form around; For the sensor of situation under the measuring well when drilling well is carried out; For remote measurement to the system of the data on earth's surface; Stabilising arrangement; Heavy weight collars, pulser etc.BHA is advanced in pit shaft by the tubular post (drilling rod) of metal usually.
Telemetry intelligence (TELINT) is very valuable for efficient drill-well operation.Such as, telemetry intelligence (TELINT) can be used by rig personnel, to make a determination to about the control of drill bit and manipulation, thus come Drilling optimization speed and track based on multiple factor (comprising legal border, the position of existing well, formation characteristics, oil gas scale and position etc.).Operating personnel can to collect and the information being transferred to earth's surface by telemetry makes deliberate departing from from the path of plan from downhole sensor based on during drilling course if desired.The ability obtaining real time data allows relatively more economical and more efficient drill-well operation.
Various technology has been used to the information transmission from the position in boring to earth's surface.These technology comprise carrys out transmission information (such as by producing vibration in fluid in the borehole, the remote measurement of acoustics or mud-pulse telemetry), and carry out transmission information (EM remote measurement) by means of the electromagnetic signal propagated through the earth at least in part.Other telemetry systems use rigid line drilling rod or optical fiber cable so that data are reached earth's surface.
Conventional structure for em telemetry uses the part of drill string as antenna.By comprising isolation connector or connector (" insulating short section (gap sub) ") in drill string, drill string can be divided into the section of two conductions.Insulating short section is placed in bottom hole assembly usually, makes metal drill pipe in drill string above BHA as an antenna element, and the metal section in BHA is used as another antenna element.Then, electromagnetic telemetry signals can by applying electrical signal for transmission between two antenna elements.Signal generally includes with coded message thus the very low-frequency ac signal that applies of the mode transferring to earth's surface.Electromagnetic signal can be detected, such as, by measuring the potential difference between drill string and one or more earth rod at earth's surface place.The challenge of EM remote measurement is that it weakens significantly when the signal produced is transmitted to earth's surface.In addition, the power supply that the power supply that can be used for producing EM signal can have a limited capacity by battery or another provides.Therefore, the system producing EM signal is efficiently provided provide.
The design of insulating short section is factor important in EM telemetry system.Insulating short section must be provided in the electric isolution between two parts of drill string, and bears the High Pressure Difference occurred between the central authorities of extreme mechanical load and the drilling rod caused during drilling well and outside.Upsilonstring components is made up of high strength, ductile metal alloy usually, carrys out processing load and can not be out of order.Be applicable to most of electrically insulating materials more weak than metal (such as rubber, plastics, epoxy resin) of the different electric isolution part of insulating short section or be highly brittle (pottery).This makes to be difficult to design and is not only configured to provide the efficient transmission of EM telemetered signal, but also has the insulating short section of the mechanical performance required for connection in drill string.
Following bibliography describes various telemetry system: US 3323327; US 4176894; US4348672; US 4496174; US 4684946; US 4676773; US 4739325; US 5130706; US 5138313; US 5236048; US 5406983; US 5467832; US 5520246; US5749605; US 5883516; US 6050353; US 6098727; US 6158532; US 6404350; US 6446736; US 6515592; US 6727827; US 6750783; US 6926098; US7151466; US 7243028; US 7255183; US 7252160; US 7326015; US 7387167; US 7573397; US 7605716; US 7836973; US 7880640; US 7900968; US8154420US 2004/0104047; US 2005/0217898; US 2006/0202852; US2006/003206; US 2007/0235224; US 2007/0247328; US 2009/0023502; US2009/0065254; US 2009/0066334; US 2010/0033344; US 2011/025469; US2011/0309949; US 2012/0085583; WO 2006/083764; WO 2008/116077; WO2009/086637; WO 2011/049573; WO 2010/121345; WO 2010/121346; WO2011/133399; WO 2012/042499; WO 2011/049573; WO 2012/045698; WO2012/082748.
Although researched and developed the system for underground remote measurement, still need actual underground telemetry system and still needed to provide the system of the efficiency of raising and/or larger scope.
Summary of the invention
The present invention has some aspects.Provide the EM telemetering equipment for down-hole application on the one hand.Provide the method for subterranean well on the other hand.
Provide subterranean well assembly according to device on the one hand, this subterranean well assembly comprises towards underground probe and insulating short section.Insulating short section comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution gap portion, this conduction towards well head part comprise for be attached in drill string towards well head connector, this conduction comprise towards down-hole portion for be attached in drill string towards down-hole connector, this lumen pore from extending to towards down-hole connector towards well head connector by insulating short section, this electric isolution clearance portion by insulating short section towards well head part and insulating short section towards down-hole portion electric isolution.Inserting tube extends in lumen pore.Inserting tube comprises the housing of elongated, and the housing of this elongated comprises the electronic equipment of signal generator.Isolated in the longitudinal direction the first electric contact piece and the second electric contact piece on the outside that inserting tube is included in housing.This device comprises the fluid walking around inserting tube and transports passage.Electric isolution the section that the wall that fluid transports passage at least extends in the longitudinal direction in the position of the position above electric isolution clearance portion to electric isolution clearance portion of passage.
The inserting tube for using in subterranean well is provided according to device on the other hand.Inserting tube comprises the metal shell of elongated.Housings close comprises the electronic equipment of telemetered signal generator.Isolated in the longitudinal direction the first electric contact piece and the second electric contact piece on the outside that housing is included in housing, and electric isolution gap comprises the electrically insulating material of the electric isolution provided between the Part I of metal shell and Part II.Gap is between the first electric contact piece and the second electric contact piece.Inserting tube is also included in the electricity isolated layer on the outer surface of metal shell.Electricity isolated layer covers electric isolution gap at least in part and extends continuously with the outer surface of the metal shell at least side of coverage gap.In some embodiments, the distance extending at least 1 meter is covered.In some embodiments, inserting tube and insulating short section combine.Insulating short section (parts or multiple separable parts can be comprised) comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution clearance portion, this conduction towards well head part comprise for be attached in drill string towards well head connector, this conduction comprise towards down-hole portion for be attached in drill string towards down-hole connector, this lumen pore from extending to towards down-hole connector towards well head connector by insulating short section, this electric isolution clearance portion by insulating short section towards well head part and insulating short section towards down-hole portion electric isolution.In combination, inserting tube be positioned at the lumen pore of insulating short section and the first electric contact piece and insulating short section towards well head part electrical contact, and the second electric contact piece and insulating short section towards the electrical contact of down-hole portion.
The subterranean well assembly comprising insulating short section is provided according to device on the other hand.Insulating short section comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution clearance portion, this conduction towards well head part comprise for be attached in drill string towards well head connector, this conduction comprise towards down-hole portion for be attached in drill string towards down-hole connector, this lumen pore from extending to towards down-hole connector towards well head connector by insulating short section, this electric isolution clearance portion by insulating short section towards well head part and insulating short section towards down-hole portion electric isolution.EM telemetered signal generator is contained in the wall of insulating short section.EM telemetered signal generator have be electrically coupled to insulating short section towards well head part and the output lead towards down-hole portion.Electric isolution sleeve lining in the contiguous electric isolution gap of the lumen pore of insulating short section at least partially.Electric isolution sleeve cover the electric isolution clearance portion of insulating short section and insulating short section towards well head part with towards at least one interface between the one in the portion of down-hole, and extending continuously towards well head part with towards the described one in the portion of down-hole along insulating short section.
Provide the subterranean well method using drill string to perform according to the method for another aspect, this drill string comprises insulating short section and is arranged in the electronic equipment bag of lumen pore of insulating short section.Electronic equipment bag has the electric contact piece with the conductive part electrical contact of insulating short section.The method comprises the lumen pore transmission of drilling fluid along drill string, and in the position of electronic equipment bag, is guided to by drilling fluid with the passage of the equal electric isolution of the conductive part of the housing of the conductive part of insulating short section and electronic equipment bag.
The feature of other aspects of the present invention and example embodiment is by shown in the drawings and/or be described in the following description.
Accompanying drawing explanation
Accompanying drawing shows nonrestrictive example embodiment of the present invention.
Fig. 1 is the schematic diagram of the drill-well operation according to example embodiment.
Fig. 2 is the longitdinal cross-section diagram of the insulating short section according to example embodiment.
Fig. 3 A-3D is the sectional view of a part for insulating short section according to example embodiment.
Fig. 4 is the schematic diagram of the equivalent circuit for telemetered signal generator and insulating short section according to example embodiment.
Fig. 5 is the sectional view with the insulating short section in the portion of extending radially inwardly according to example embodiment.
Fig. 5 A is the sectional view with the axis of the insulating short section in the portion of extending radially inwardly according to example embodiment.
Fig. 6 schematically shows the example embodiment that electronic equipment bag is arranged in the cavity of the wall of insulating short section.
Detailed description of the invention
Run through following description, specific details is set forth, thus provide more thorough understanding to those skilled in the art.But known element can not be illustrated or describe particularly to avoid unnecessarily making the disclosure fuzzy.The following description of the example of this technology has no intention exhaustive or is the accurate form of any example embodiment by system constraint.Therefore, description and accompanying drawing are considered to illustrative, instead of restrictive meaning.
Although below discussed some exemplary aspect and embodiments, those skilled in the art will recognize that some amendments, displacement, added and its sub-portfolio.Therefore, be intended to following appended claims and claims of after this introducing be interpreted as being included in these amendments whole, displacement in its real spirit and scope, add and sub-portfolio.
Fig. 1 schematically shows example drill-well operation.Rig 10 drives drill string 12, and drill string 12 comprises the drilling rod section extending to drill bit 14.Illustrated rig 10 comprises derrick 10A, rig floor 10B and winch 10C for supporting drill string.Drill bit 14 is greater than the drill string above drill bit at diametrically.Annular section 15 around drill string is filled with drilling fluid usually.Drilling fluid is pumped to drill bit by the lumen pore in drill string, and the drilling cuttings carried from drill-well operation returns to earth's surface by annular section 15.When a well is drilled, sleeve pipe 16 can be formed in the wellbore.Preventer 17 is supported with at the top end of sleeve pipe.Rig shown in Fig. 1 is only exemplary.Method and apparatus described herein is not specific to the rig of any particular type.
Drill string 12 comprises insulating short section 20.The EM signal generator 18 being positioned at (in the electronic equipment inserting tube such as, in the lumen pore being placed in drill string) inside drill string is electrically connected by the electric isolution gap across insulating short section 20.Signal from EM signal generator causes the electric current 19A that can detect at earth's surface place and electric field 19B.In the embodiment as shown, signal receiver 13 is connected by signal cable 13A, with the potential difference between the top measuring stake 13B and drill string 12 electrical ground.Display 11 can be connected to show the data received by signal receiver 13.
Fig. 2 shows the exemplary construction of insulating short section 20.Insulating short section 20 have by the isolated conduction of gap 20C being filled with electrically insulating material towards well head part 20A and conduction towards down-hole portion 20B.At insulating short section 20 towards uphole end and the connector 21 that is provided with towards downhole end place for connecting contiguous drill string component.The electronic equipment bag 22 comprising EM telemetered signal generator (not shown in Fig. 2) is supported with in the lumen pore 20D of insulating short section 20.
Electronic equipment bag 22 has metal shell 23, and this metal shell 23 comprises by electric isolution gap 23C Part I 23A electrically isolated from one and Part II 23B.First electrode 24A and the second electrode 24B is connected to telemetered signal generator, and respectively with the contacting with towards down-hole portion 20B towards well head part 20A of insulating short section 20.Electrode 24A can but may not with first of the housing of an electronic equipment bag 22 23A electrical contact.Electrode 24B can but may not with second of the housing of an electronic equipment bag 22 23B electrical contact.
The electric isolution gap 23C of electricity isolated layer 25 overlay electronic equipment bag 22 at least in part.Electricity isolated layer 25 extends on the outer surface of electronic equipment bag 22, and on the one or both sides of electric isolution gap 23C, exceed the outer surface of the electric isolution gap 23C certain distance ground conductive shell 23 of overlay electronic equipment bag 22 continuously.In some embodiments, the length of the continuous covering of electricity isolated layer 25 is at least 1 meter and preferably at least 1 1/ 2rice or 2 meters.In some example embodiment, the length of the continuous covering of electricity isolated layer 25 is 3 to 4 meters.
In some embodiments, electricity isolated layer 25 continuously the outer surface of overlay electronic equipment bag 22 the part between electrode 24A and electrode 24B at least 60% or 70% or 80%.In some embodiments, whole these parts substantially between electrode 24A and electrode 24B of electricity isolated layer 25 outer surface of overlay electronic equipment bag 22 continuously.Herein, " substantially whole " mean at least 95%.
In some embodiments, electricity isolated layer 25 comprises the coating being applied to electronic equipment bag 22, the sleeve extended around electronic equipment bag 22 or pipe etc.The material of layer 25 can be any electrically insulating material be applicable to being exposed under conditions down-hole.Some non-limiting examples are applicable thermoplastic, epoxy resin, pottery, elastomeric polymer and rubber.Layer 25 can comprise the coating being applied to or being bonded to electronic equipment bag 22, or preform part (such as, by extruding, the formation such as injection-molded), this preform part is attached to electronic equipment bag 22 subsequently, adheres to or support around electronic equipment bag 22 around electronic equipment bag 22.The material of layer 25 should be able to bear conditions down-hole and not deteriorated.Desirable material can bear the temperature (preferably 175 DEG C or 200 DEG C or higher) being up to few 150 DEG C, the any drilling fluid be exposed to there are chemical resistance or inertia for it, not absorbing fluid and resist the corrosion of drilling fluid to a great extent.The example of the material be applicable to is PET (PETG) or PEEK (polyether-ether-ketone).
Electronic equipment bag 22 and insulating short section 20 conduction towards well head part 20A and/or towards down-hole portion 20B inner surface between be provided with the second electricity isolated layer 26.Electricity isolated layer 26 extends the private side covering electric isolution gap 20C at least in part, and extends the conductive part of the lumen pore wall covered at least side of electric isolution gap 20C continuously.In some embodiments, electricity isolated layer 26 covers the part comprising the private side of electric isolution gap 20C of lumen pore wall continuously, and extend continuously to cover insulating short section 20 towards well head part 20A and the part towards down-hole portion 20B.In some embodiments, electricity isolated layer 26 comprises and is applied to the coating inside insulating short section 20, the sleeve extended around the inner side of insulating short section 20 or pipe etc.
The same with layer 25, the material of layer 26 can be any electrically insulating material be applicable to being exposed under conditions down-hole.Some non-limiting examples are applicable thermoplastic, epoxy resin, pottery, elastomeric polymer and rubber.Layer 26 can comprise the coating of the interior wall being applied to, being formed in or being bonded to insulating short section 20, or preform members (such as by extruding, injection-molded etc. to be formed), preform members be attached to subsequently the lumen pore of insulating short section 20 inner side, adhere to around the inner side of the lumen pore of insulating short section 20, around the lumen pore of insulating short section 20 inner side and support.The example of the material be applicable to is PET (PETG) or PEEK (polyether-ether-ketone).
The present inventor has determined that the low impedance path in the lumen pore of insulating short section is important reason in the efficiency of transmission of EM telemetered signal.The setting of electricity isolated layer 25, particularly to combine with the setting of electricity isolated layer 26, be found to greatly reduce the loss caused by the conductive electric current in the lumen pore of insulating short section.By being overlying on the electricity isolated layer 25 and 26 of the conductive surface in lumen pore 27 as lining, by being electrically connected the length that the shortest path of the part 20A of insulating short section 20 and the fluid of 20B is at least shorter one in electricity isolated layer 25 and 26 in lumen pore 27.
Fig. 3 A-3D shows possible electrical conduction path, and the electric current carrying out self-electrode 24A and 24B can by these paths.It is seen that at least one that all these possible electrical conduction paths are electrically isolated from each other in layer 25, electricity isolated layer 26, electric isolution gap 23C and electric isolution gap 20C blocks.
By providing electric isolution to hinder (otherwise the drilling fluid that can be exposed in the lumen pore of insulating short section 20) on the conductive surface and/or insulating short section 20 of electronic equipment bag 22, the sizable improvement in efficiency aspect of EM transmission can be obtained.The length of separation layer 25 and 26 should be enough, thus the impedance of the conductive path by lumen pore fluid is increased to the degree of expectation.There is provided at least approximate 2 meters (6 feet) long electricity isolated layer 25 and 26 be illustrated as with 90% or the power loss that reduces more in some cases because electric current causes in the flowing of boring inner side.
In the exemplary embodiment, separation layer 25 and 26 is the length (although in some embodiments can be shorter) of at least 1 meter.In some embodiments, separation layer 26 extends to the length of at least 75% of the length of electricity isolated layer 25.In a preferred embodiment, at least the same with electricity isolated layer 25 length of electricity isolated layer 26.In some embodiments, electricity isolated layer 26 covers the substantially whole inner side of the part between electrode 24A and electrode 24B of the lumen pore of insulating short section 20.
Fig. 4 schematically shows the equivalent circuit (ignoring capacity effect and inductive effect) for telemetered signal generator and insulating short section 20.Resistor R iNrepresent current path available in the lumen pore 20D of insulating short section 20, and resistor R oUTrepresent the available current path of insulating short section 20 outside.Dual non-conductive layer 25 and 26 provides effectively large internal insulation path (R iNhigher value), therefore by providing interior resistance (R between the antenna element of insulating short section 20 iN) increase the electrical efficiency of insulating short section 20EM remote measurement, this interior resistance (R iN) with the resistance (R of outer gap oUT) compare greatly.
Another advantage that the inner surface of insulating short section 20 and the external surface of electronic equipment bag 22 arrange non-conductive layer is that layer 25 and 26 prevents the conductive outer surface of electronic equipment bag 22 and the inner surface electrical contact of insulating short section 20, and this electrical contact is when occurring when electronic equipment bag and insulating short section bear HI high impact and/or vibration.This contact can damage the remote measurement of telemetered signal generator (such as, by making its output short-circuit) and/or interference down-hole information.
Centralizer can be set alternatively to keep the central authorities of electronic equipment bag 22 in the lumen pore 20D of insulating short section 20.Various centralizer design is used.Any applicable centralizer can be used.In some embodiments, the one or both in layer 25 and 26 and centralizer are integrally formed.Such as, the component that centers, the spine such as extended in the longitudinal direction or protrusion or other projections, can be arranged in the one or both in layer 25 and 26 to keep electronic equipment bag 22 placed in the middle in the lumen pore of insulating short section 20.The component that such as centers can include flexible elastic body or shock material, such as rubber or applicable plastics.
Arranging electricity isolated layer 25 and/or 26 also allows to make the minimum interval between the external surface of the interior surface of conductive part 20A and 20B of insulating short section 20 and the housing 23 of electronic equipment bag 22 to reduce significantly, and does not make the loss caused due to the fluid in the lumen pore by insulating short section 20 increase significantly.This is significant especially when the drilling fluid used is to provide the type of relatively low electrical impedance.The water-base drilling fluid electrical impedance that usually tool is lower.
Arranging electricity isolated layer 25 and/or 26 also allows the width of the gap 20C inside the lumen pore of insulating short section 20 and the width of gap 23C to reduce.The reduction of the width of gap 20C and/or 23C can obtain more firmly device, this is because the most available electrically insulating material being suitable for gap 23C and 20C is more insecure than the material (in most cases normally metal) of other parts for insulating short section 20 and housing 23.
Electricity isolated layer 25 and 26A also slow down the needs of the gap 20C of any aligning insulating short section 20 and the gap 23C of electronic equipment bag 22.In some embodiments, gap 20C and gap 23C is spaced apart in the longitudinal direction.Therefore, the position in the longitudinal direction that permission adjustment electronic equipment bag 22 is set of electricity isolated layer 25 and 26, and can not produce because gap 20C and 23C misalignment may produced problem.In addition, when not needing to make gap 23C and gap 20C in the longitudinal direction on time, can for optimal mechanical properties and/or the position selecting gap 23C on electronic equipment bag 22 for the optimal placement in electronic equipment bag 22 inner electronic equipment system and parts.
In some embodiments, conductive part 20A and 20B of insulating short section 20 is formed as providing the part extended radially inwardly, and thinks that electronic equipment bag 22 provides supporting.The portion of extending radially inwardly can form with the part 20A of same metal and 20B.
Fig. 5 shows the exemplary device 50 comprising insulating short section 20, and this insulating short section 20 is formed as providing with the form in the flap portion 52 of the circle extended in the longitudinal direction in the lumen pore 20D of insulating short section 20 portion of extending radially inwardly.Flap portion 52 can extend to the whole length of roughly electronic equipment bag 22.Flap portion 52 can such as be formed by milling cutter.
Fig. 5 A shows example embodiment, and wherein, electricity isolated layer 25 is arranged on the outside of electronic equipment bag 22.Another electricity isolated layer 26A preferably but be arranged on alternatively cover flap portion 52, on the inner side of the lumen pore of insulating short section 20.
As shown in Figure 5 A, the size in flap portion 52 is set as and makes electronic equipment bag 22 be held firmly in it towards in interior slightly end.Electricity isolated layer 25 and/or 26A can be to provide the damping of machinery and the material of electric insulation.Electronic equipment bag 22 is mechanically attached to continuously flexure and the vibration of the electronic equipment bag 22 that insulating short section 20 roughly can reduce the acceleration of the transverse direction due to drill string, the flowing etc. of drilling fluid causes along its length.
Device as described in this article can application in subterranean well application widely.Such as, remote measurement is provided in drilling well (' MWD ' (measurement while drilling)) application the while that device can be applicable in well logging drilling well simultaneously (' LWD ' (well logging during)) and/or measures.Arrange device as described in this article, the current flowing between the different antenna element wherein in the lumen pore of drill string weakens significantly, reduces the load on telemetered signal generator.Like this and then identical telemetered signal generator can be allowed to operate together with the power stage of reduction, and/or for antenna element provides more high-tension signal, thus be conducive to extending one or more battery life, reduce power consumption, improve the telemetered signal intensity at earth's surface place and reduce remote measurement error rate.In down-hole application, extending battery life is very important, due to battery altering or recharge electronic equipment bag can be needed to recall from hole.This is consuming time and labour-intensive.Therefore, increase running time longer during battery life can cause drill-well operation, and required service intervals is less.
Another aspect of the present invention provides a kind of subterranean well method.The method uses drill string to perform, and this drill string comprises insulating short section and is arranged in the electronic equipment bag of lumen pore of insulating short section.Electronic equipment bag has the electric contact piece with the conductive part electrical contact of insulating short section.The method comprises the lumen pore transmission of drilling fluid along drill string, and in the position of electronic equipment bag, is guided to by drilling fluid with the passage of the equal electric isolution of conductive part of the housing of the conductive part of insulating short section and electronic equipment bag.In some embodiments the foregoing describing its example, passage is the annular channel around electronic equipment bag part in-between the electrodes.But this not necessarily.
Alternative is possible widely.Such as, insulating short section be single parts not necessarily.In some embodiments, insulating short section comprises and can be assembled into together in drill string to provide multiple parts of electric isolution between two of drill string parts.The section that the one, two, three or more that inserting tube can fully extend or extend partially through drill string is linked together.
In some embodiments, the electronic system that can comprise telemetered signal generator is arranged on the bag of the cavity being arranged in the wall being formed in drill collar or insulating short section.This embodiment can not have the independently inserting tube in the lumen pore being arranged on drill collar or insulating short section.Be contained in can being undertaken by the mode being embedded in the conductor in the wall of insulating short section towards well head part 20A with towards the electrical connection between down-hole portion 20B of EM telemetered signal generator in the wall of drill string section and insulating short section.Fig. 6 schematically shows example embodiment, and wherein, electronic equipment bag 60 is arranged in the cavity 61 of the wall of insulating short section 20.In this embodiment, by electricity isolated layer 26 is arranged to cover at least in part electric isolution gap 20C inner side and extend the conduction to cover insulating short section 20 continuously towards well head part 20A with towards the part adjacent with electric isolution gap 20C of one or both in the inner surface of down-hole portion 20B, the efficiency of EM remote measurement can be improved.Electricity isolated layer 26 covers electric isolution gap 20C and towards well head part 20A with towards at least one in the interface 62 between down-hole portion 20B.By electricity isolated layer 26 is overlying on lumen pore 27 as lining, be at least the length of electricity isolated layer 26 by the part 20A of the electrical connection insulating short section 20 of fluid in lumen pore 27 and the shortest path of 20B.
the explanation of term
Unless outside clearly requiring within a context, otherwise run through manual and claims:
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" connection ", " connection " or its any modification means or direct or indirectly any connection or connection between two or more elements; Connection between elements or connect can be physics, logic or its combination.
" herein ", " more than ", the wording of " below " and similar meaning, any specific part of this manual all and not this manual should be referred to when for describing this manual.
When the list of quoting two or more projects, "or" covers following whole explanations to word: whole items of the project in the Arbitrary Term of the project in list, list, and any combination of project in list.
Singulative " a ", " an " and " being somebody's turn to do " also comprise the meaning of any suitable plural form.
The word of the direction indication used with (if depositing in case) in any appended claims in this manual, such as " vertically ", " transverse direction ", " level ", " upwards ", " downwards ", " forward ", " backward ", " inwardly ", " outwards ", " vertically ", " transverse direction ", "left", "right", "front", "rear", " top ", " bottom ", " below ", " top ", " below " etc., according to the described and certain orientation of the device illustrated.Multiple substituting orientation can be supposed in theme described herein.Therefore, these direction terms strictly do not limit and should narrowly not explained.
When parts as mentioned above (such as, circuit, module, assembly, device, upsilonstring components, borer system etc.) time, except as otherwise noted, (namely the parts (comprising " device " mentioned) mentioned should be interpreted as the equivalent any parts substituted as these parts of the function of the parts comprised described by execution, functionally equivalent to substitute), comprise the function that performs in illustrative embodiments of the present invention but be not structurally equal to the parts of disclosed structure.
The particular example of system, method and device is described in this article for purposes of illustration.These are only examples.The technology provided herein can be applied to the system except above-mentioned example system.In practical range of the present invention, many changes, amendment, interpolation, omission and displacement are possible.The present invention includes the modification of embodiment significantly described to those skilled in the art, comprise the modification obtained in the following manner: replace feature, element and/or action with equivalent feature, element and/or action; Mix and mate the feature of different embodiment, element and/or action; By the feature of the feature of embodiment described herein, element and/or action and other technologies, element and/or combination of actions; And/or omit the feature of combination, element and/or action from described embodiment.
Therefore, be intended to following claims and the claim after this introduced be interpreted as comprising can reasonably infer whole amendments, displacement, interpolation, omission and sub-portfolio.The scope of claims should not be limited to the preferred embodiment set forth in example, and should be endowed the most wide in range explanation consistent with manual as a whole.

Claims (48)

1., for an inserting tube for subterranean well, comprising:
The metal shell of elongated, the metal shell of described elongated comprises the electronic equipment of signal generator, isolated in the longitudinal direction the first electric contact piece and the second electric contact piece on the outside that the housing of described elongated is included in described housing, and electric isolution gap, described electric isolution gap comprises the electrically insulating material of the electric isolution between Part I and Part II providing described metal shell, and described gap is between described first electric contact piece and described second electric contact piece; And,
First electricity isolated layer, described first electricity isolated layer is positioned on the outer surface of described metal shell, and described first electricity isolated layer covers described electric isolution gap at least in part, and extends the one section of described outer surface covering described metal shell continuously.
2. inserting tube according to claim 1, wherein, described signal generator is electromagnetic telemetry signals generator.
3. the inserting tube according to any one in claim 1 and 2, wherein, described first electric contact piece and described second electric contact piece are positioned at the opposed end place of the metal shell of described elongated.
4. the inserting tube according to any one in claims 1 to 3, wherein, the distance of described first electricity isolated layer between described first electric contact piece and described second electric contact piece at least 65% distance on cover the described outer surface of described metal shell continuously.
5. the inserting tube according to any one in claims 1 to 3, wherein, the distance of described first electricity isolated layer between described first electric contact piece and described second electric contact piece at least 80% distance on cover the described outer surface of described metal shell continuously.
6. the inserting tube according to any one in claims 1 to 3, wherein, described first electricity isolated layer covers the distance of the described outer surface at least 1 meter of described metal shell continuously.
7. the inserting tube according to any one in claims 1 to 3, wherein, described first electricity isolated layer covers the distance of the described outer surface at least 2 meters of described metal shell continuously.
8. the inserting tube according to any one in claim 1 to 7, wherein, the described Part I electrical contact of described first electric contact piece and described housing.
9. inserting tube according to claim 8, wherein, the described Part II electrical contact of described second electric contact piece and described housing.
10. the inserting tube according to any one in claim 1 to 9, wherein, described first electricity isolated layer comprises thermoplastic.
11. inserting tubes according to any one in claim 1 to 9, wherein, described first electricity isolated layer comprises and is selected from following material: thermoplastic, epoxy resin, pottery, elastomeric polymer and rubber.
12. inserting tubes according to any one in claim 1 to 11, wherein, described first electricity isolated layer comprises the coating of the outer surface being applied to described inserting tube.
13. inserting tubes according to any one in claim 1 to 11, wherein, the preform part that the described outer surface that described first electricity isolated layer is included in described inserting tube engages.
14. inserting tubes according to claim 13, wherein, described preform part comprises preformed tubular sleeve.
15. inserting tubes according to any one in claim 1 to 14, wherein, described first electricity isolated layer and centralizer form.
16. inserting tubes according to claim 15, wherein, the outer surface of described first electricity isolated layer are provided with the spine or protrusion that extend in the longitudinal direction.
17. 1 kinds of inserting tube compositions comprising the inserting tube according to any one in claim 1 to 16 combined with insulating short section, described insulating short section comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution clearance portion, described conduction towards well head part comprise for be attached in drill string towards well head connector, described conduction comprise towards down-hole portion for be attached in described drill string towards down-hole connector, described lumen pore extends to described towards down-hole connector from described towards well head connector by described insulating short section, described electric isolution clearance portion is by described towards down-hole portion electric isolution towards well head part and described insulating short section of described insulating short section described, wherein, described inserting tube is positioned at the described lumen pore of described insulating short section, and described first electric contact piece and described insulating short section is described towards well head part electrical contact, and described second electric contact piece and described insulating short section is described towards the electrical contact of down-hole portion.
18. inserting tube compositions according to claim 17, wherein, the described electric isolution gap of described inserting tube and the described electric isolution clearance portion of described insulating short section spaced apart in the longitudinal direction.
19. inserting tube compositions according to any one in claim 17 and 18, are included in the second electricity isolated layer extended around described inserting tube in the described lumen pore of described insulating short section.
20. inserting tube compositions according to claim 19, wherein, described first electricity isolated layer and described second electricity isolated layer are at least 2 meters long.
21. inserting tube compositions according to claim 19, wherein, the length of described second electricity isolated layer is at least 75% of the length of described first electricity isolated layer.
22. inserting tube compositions according to claim 19, wherein, described second electricity isolated layer covers the whole part between described first electric contact piece and described second electric contact piece of the wall of the described lumen pore of described insulating short section substantially.
23. according to claim 19 to the inserting tube composition described in any one in 22, and wherein, described second electricity isolated layer is overlying on the inwall of the described lumen pore of described insulating short section as lining.
24. inserting tube compositions according to claim 23, wherein, described second electricity isolated layer comprises the coating of the described inwall of the described lumen pore being applied to described insulating short section.
25. inserting tube compositions according to claim 23, wherein, described second electricity isolated layer comprises the tubular sleeve of the described inwall joint of the described lumen pore around described insulating short section.
26., according to claim 19 to the inserting tube composition described in any one in 22, also comprise drill collar, described drill collar be attached to described insulating short section towards downhole end, wherein, described second electricity isolated layer is overlying on the inwall of the lumen pore of described drill collar as lining.
27. inserting tube compositions according to claim 26, wherein, described second electricity isolated layer comprises the coating of the described inwall of the described lumen pore being applied to described drill collar.
28. inserting tube compositions according to claim 26, wherein, described second electricity isolated layer comprises the preform part of the described inwall joint of the described lumen pore around described drill collar.
29. according to claim 19 to the inserting tube composition described in any one in 23 and 26, wherein, described second electricity isolated layer comprises the tubular sleeve being formed with the flap portion that length direction extends, and the flap portion that described length direction extends contacts described first electricity isolated layer be positioned on the described outer surface of described metal shell.
30. inserting tube compositions according to claim 29, wherein, at least one in described first electricity isolated layer and described second electricity isolated layer comprises the material providing mechanical damping.
31. according to claim 17 to the inserting tube composition described in any one in 30, and wherein, described insulating short section is included in inwardly-extending portion inwardly outstanding on the inner side of described lumen pore.
32. inserting tube compositions according to claim 31, wherein, described inwardly-extending portion comprises the spine that length direction extends.
33. inserting tube compositions according to claim 32, wherein, the spine that described length direction extends comprises circular flap portion.
34. inserting tube compositions according to any one in claim 32 and 33, wherein, it is described towards well head part and the described metal spine formed towards the one or both in the portion of down-hole that the spine that described length direction extends comprises with described insulating short section.
35. inserting tube compositions according to any one in claim 31 to 34, wherein, described inwardly-extending portion carries out extending thus from multiple different circumferential direction to support described inserting tube.
36. according to claim 17 to the inserting tube composition described in any one in 25, comprise the drill collar towards downhole end being attached to described insulating short section, wherein, described drill collar comprises lumen pore and inwardly-extending portion, described inwardly-extending portion is inwardly given prominence on the inner side of the described lumen pore of described drill collar, wherein, described inserting tube extends in described drill collar.
37. 1 kinds of subterranean well assemblies, comprising:
Insulating short section, described insulating short section comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution clearance portion, described conduction towards well head part comprise for be attached in drill string towards well head connector, described conduction comprise towards down-hole portion for be attached in described drill string towards down-hole connector, described lumen pore extends to described towards down-hole connector from described towards well head connector by described insulating short section, described electric isolution clearance portion is by described towards down-hole portion electric isolution towards well head part and described insulating short section of described insulating short section described;
The inserting tube extended in described lumen pore, described inserting tube comprises the housing of elongated, the housing of described elongated comprises the electronic equipment of signal generator, isolated in the longitudinal direction the first electric contact piece and the second electric contact piece on the outside that the housing of described elongated is included in described housing; And
The fluid walking around described inserting tube transports passage, wherein, described fluid transports the wall of passage at least at the section electric isolution extending to the position be positioned at below described electric isolution clearance portion from the position be arranged in above described electric isolution clearance portion in the longitudinal direction of described passage.
38. according to subterranean well assembly according to claim 37, and wherein, described fluid transports passage and is configured to above described inserting tube, transport the whole fluids flowed in described lumen pore.
39. according to subterranean well assembly according to claim 38, and wherein, the cross section of described fluid transport passage is ring-type and described fluid transport passage extends around described inserting tube.
40. 1 kinds of subterranean well methods by using drill string to perform, described drill string comprises insulating short section and is arranged in the electronic equipment bag of lumen pore of described insulating short section, wherein, described electronic equipment handbag is drawn together and the first electric contact piece of the conductive part electrical contact of described insulating short section and the second electric contact piece, and described method comprises:
By the lumen pore transmission of drilling fluid along described drill string; And,
In the position of described electronic equipment bag, described drilling fluid is guided to the passage of the equal electric isolution of the conductive part of the housing of the conductive part of described insulating short section and described electronic equipment bag.
41. methods according to claim 40, wherein, the cross section of described passage is ring-type.
42. methods according to any one in claim 40 and 41, wherein, described passage is around the part between described electric contact piece of at least described electronic equipment bag.
43. methods according to any one in claim 40 to 42, are included in described passage the distance of described drilling fluid being transported at least 1 meter.
44. methods according to any one in claim 40 to 42, are included in described passage and described drilling fluid are transported at least 1 1/ 2the distance of rice.
45. methods according to any one in claim 40 to 42, be included in described passage transport the distance of described drilling fluid between described first electric contact piece and described second electric contact piece at least 65% distance.
46. 1 kinds of subterranean well assemblies, comprising:
Insulating short section, described insulating short section comprise conduction towards well head part, conduction towards down-hole portion, lumen pore and electric isolution gap portion, described conduction towards well head part comprise for be attached in drill string towards well head connector, described conduction comprise towards down-hole portion for be attached in described drill string towards down-hole connector, described lumen pore extends to described towards down-hole connector from described towards well head connector by described insulating short section, described electric isolution clearance portion is by described towards down-hole portion electric isolution towards well head part and described insulating short section of described insulating short section described;
EM telemetered signal generator, described EM telemetered signal generator is contained in the wall of described insulating short section, and described EM telemetered signal generator has and is electrically coupled to the described towards well head part and the described output lead towards down-hole portion of described insulating short section; And,
Electric isolution sleeve, described electric isolution sleeve is overlying on the described lumen pore of described insulating short section as lining, described electric isolution sleeve covers the electric isolution clearance portion of described insulating short section and the described of described insulating short section towards well head part and described at least one joint between the one in the portion of down-hole, and along described insulating short section described towards well head part with describedly to extend continuously towards the described one in the portion of down-hole.
47. 1 kinds have as described in this article any newly with the device of the sub-portfolio of the feature of invention, the combination of feature or feature.
48. 1 kinds have as described in this article any newly with the method for the step of invention, action, step and/or the combination of action or the sub-portfolio of step and/or action.
CN201380058061.7A 2012-11-06 2013-11-06 Downhole electromagnetic telemetering equipment Active CN104919137B (en)

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US201261723286P 2012-11-06 2012-11-06
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PCT/CA2013/050850 WO2014071520A1 (en) 2012-11-06 2013-11-06 Downhole electromagnetic telemetry apparatus

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EA028582B1 (en) 2017-12-29
CN104919137B (en) 2018-05-08
WO2014071520A1 (en) 2014-05-15
EA201590897A8 (en) 2015-11-30
EA201590897A1 (en) 2015-08-31
CN104919137A8 (en) 2017-12-08
CA2890603C (en) 2018-12-04
EP2917481A4 (en) 2016-11-30
US20150285062A1 (en) 2015-10-08
NO2970497T3 (en) 2018-03-24
EP2917481A1 (en) 2015-09-16
CA2890603A1 (en) 2014-05-15
EP2917481B1 (en) 2018-02-21

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Inventor after: Allen W. Logan

Inventor after: Patrick R Dare card thatch

Inventor after: Jia Siting C Lip river root

Inventor after: David A Si Weiceer

Inventor after: Geely (Jerry) Liu

Inventor after: Mojtaba Kazimiermiraki

Inventor before: Allen W. Logan

Inventor before: Patrick R Dare card thatch

Inventor before: Jia Siting C Lip river root

Inventor before: David A Si Weiceer

Inventor before: Geely (Jerry) Liu

Inventor before: Mu Jietabakaqi meter

COR Change of bibliographic data
CI02 Correction of invention patent application
CI02 Correction of invention patent application

Correction item: Applicant|Inventor

Correct: Development engineering limited company|Allan W Lip river root|Patrick R Dare card thatch|Jia Siting C Lip river root|David A Si Weiceer|Zi Li (Jerry) Liu|Mojtaba Kazimiermiraki

False: Evolution Engineering Co., Ltd|Allan W Lip river root|Patrick R Dare card thatch|Jia Siting C Lip river root|David A Si Weiceer|Geely (Jerry) Liu|Mu Jietabakaqi meter

Number: 37

Volume: 31

Correction item: Applicant|Inventor

Correct: Development engineering limited company|Allan W Lip river root|Patrick R Dare card thatch|Jia Siting C Lip river root|David A Si Weiceer|Zi Li (Jerry) Liu|Mojtaba Kazimiermiraki

False: Evolution Engineering Co., Ltd|Allan W Lip river root|Patrick R Dare card thatch|Jia Siting C Lip river root|David A Si Weiceer|Geely (Jerry) Liu|Mu Jietabakaqi meter

Number: 37

Page: The title page

Volume: 31

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