| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | DOWNHOLE EVALUATION WITH NEUTRON ACTIVATION MEASUREMENT | EP14890776 | 2014-04-28 | EP3100076A4 | 2017-10-25 | GUO WEIJUN; DORFFER DANIEL FRANCOIS |
| Neutron activation measurement techniques may be used to evaluate various properties of a subterranean well structure. In an example implementation, a logging tool can be positioned within a wellbore, such that neutrons generated by a neutron source are directed towards well structure. In response to the neutrons, the well structure emits gamma rays. A portion of the gamma rays can be detected by a gamma detector. To enhance the well structure's response to neutron activation, the well structure can be constructed of materials that include one or more doping materials. The inclusion of these doping materials can increase the number of gamma rays that are emitted when neutrons are directed into the well structure, and these emitted gamma rays can be more easily identified based on their energy level. | ||||||
| 62 | CEMENT EVALUATION WITH NEUTRON-NEUTRON MEASUREMENT | EP13900836 | 2013-12-30 | EP3066301A4 | 2017-09-06 | GUO WEIJUN; DORFFER DANIEL F |
| Various embodiments include apparatus and methods to conduct neutron-neutron measurements and to evaluate quality of cement between a casing and a formation. A tool can include a neutron source, a far detector, and a near detector, where the far detector and the near detector detect neutrons in response to activation of the neutron source. Measured counts of the detected neutrons can be compared with respect to expected counts of neutrons. From one or more comparisons, the quality of the cement can be evaluated. Additional apparatus, systems, and methods are disclosed. | ||||||
| 63 | RESONANCE-BASED INVERSION OF ACOUSTIC IMPEDANCE OF ANNULUS BEHIND CASING | EP15290308.4 | 2015-12-11 | EP3179277A1 | 2017-06-14 | Lemaranko, Mikhall; Klieber, Christoph; Thierry, Sylvain; Bose, Sandip; Zeroug, Smaine |
Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material. Techniques include normalizing the acoustic wave to result in a normalized wave having a comparable spectral shape with a reference wave, and comparing the normalized wave with the reference wave. The reference wave may be generated or modeled or produced from a look-up table or database, and may be estimated based on initial estimates of wellbore parameters. Based on the comparison of the normalized wave with the reference wave, a best-fit reference wave substantially matching the normalized wave may be identified. The best-fit reference wave may correspond with a thickness of the casing, an acoustic impedance of the annular fill material, and an acoustic impedance of mud.
|
||||||
| 64 | CEMENT EVALUATION USING THE INTEGRATION OF MULTIPLE MODES OF ACOUSTIC MEASUREMENTS | EP15290288.8 | 2015-11-16 | EP3168412A1 | 2017-05-17 | Kalyanaraman, Ram Sunder; Hori, Hiroshi |
Systems, methods, and devices for evaluating proper cement installation in a well are provided. In one example, a method includes receiving acoustic cement evaluation data into a data processing system. The acoustic cement evaluation data derives from one or more acoustic downhole tools used over a depth interval in a well having a casing. The acoustic cement evaluation data includes sonic measurements and ultrasonic measurements. The method includes deriving a sonic-derived acoustic impedance Z(sonic) from the sonic measurements deriving an ultrasonic-derived acoustic impedance Z(ultrasonic) from the ultrasonic measurements comparing the Z(sonic) with respect to the Z(ultrasonic), and determining whether an annular fill behind the casing is well bonded, partially bonded, comprises wet microannulus, or comprises dry microannulus based on the comparison of the Z(sonic) with respect to the Z(ultrasonic).
|
||||||
| 65 | MULTI-SENSOR WORKFLOW FOR EVALUATION OF WATER FLOW IN MULTIPLE CASING STRINGS | EP15840296.6 | 2015-09-04 | EP3167157A1 | 2017-05-17 | QUINTERO, Luis, F. |
| A distance of a water flow path and a velocity of the water flow is calculated using pulsed neutron data and noise data. The two distance and velocity values are compared with each other to obtain a first calculated distance and a first calculated velocity. The distance of the water flow path and the velocity of the water flow are calculated using Doppler data. The distance and velocity values are compared with the first calculated distance and first calculated velocity to obtain a second calculated distance and velocity values. The distance of the water flow path and the velocity of the water flow are calculated using temperature data. The distance and velocity values are compared with the second calculated distance and velocity to determine a distance of a cement interface and a velocity of a water flow in the cement interface. | ||||||
| 66 | PROCEDE ET SYSTEME D'EXPLOITATION ET DE SURVEILLANCE D'UN PUITS D'EXTRACTION OU DE STOCKAGE DE FLUIDE | EP15733792.4 | 2015-06-03 | EP3152396A1 | 2017-04-12 | DROUET, Emeline; GORINTIN, Louis |
| The system for operating and monitoring a well for extracting or storing a fluid to be used, such as natural gas, comprises a tubing (20) in which the fluid to be used flows, a protective casing (60) disposed around the tubing (20) and a cement sheath (30) interposed between the casing (60) and a rock formation (70) through which the well extends. The system further comprises, outside the casing (60), between same and the cement sheath (30), a series of electronic units (110) distributed in predefined positions in a succession of planes perpendicular to the casing (60) and spaced apart axially along the casing (60). Each electronic unit (110) comprises a communication means (14) for the electronic unit to communicate with another electronic unit (110) or a surface terminal (100), a power supply unit (13) of the electronic unit (110) and at least one of the following elements: a) a detection unit comprising at least one sensor (11) for sensing a physical or chemical quantity and b) a signal processing unit (12). | ||||||
| 67 | WELL TOOL FOR USE IN A WELL PIPE | EP14712630.4 | 2014-03-17 | EP2971460B1 | 2017-02-01 | KRIVOSHEEV, Sergey, Ivanovich; SVECHNIKOV, Evgeni, Lvovich; ZHABKO, Georgy, Petrovich; BELOV, Andrey, Aleksandrovich; ADAMIAN, Yuri, Eduardovich |
| 68 | METHODS OF ISOLATING ANNULAR AREAS FORMED BY MULTIPLE CASING STRINGS IN A WELL | EP12865923.2 | 2012-01-17 | EP2805010B1 | 2017-02-01 | BARLOW, Darren, Ross; KESSLER, Calvin, W. |
| 69 | CIRCUMFERENTIAL ARRAY BOREHOLE EVALUATION TOOL | EP14889802.6 | 2014-04-22 | EP3111044A1 | 2017-01-04 | HILL, Jim T.; FOX, Philip E.; CHENG, Arthur Chuen Hon; TRACADAS, Philip William |
| An example apparatus for downhole cement inspection may include a tool body and an acoustic transmitter coupled to the tool body. An acoustic receiver may be coupled to the tool body at a first distance from the acoustic transmitter. A first array of acoustic receivers may be coupled to and positioned around a circumference of the tool body at a second distance from the acoustic transmitter. The second distance may be greater than the first distance. The acoustic receiver may be one receiver of a second array of acoustic receivers coupled to and positioned around the circumference of the tool body at the first distance. The first distance may be approximately three feet and the second distance may be approximately five feet. | ||||||
| 70 | METHOD AND A SYSTEM FOR ULTRASONIC INSPECTION OF WELL BORES | EP15707435.2 | 2015-02-18 | EP3108232A1 | 2016-12-28 | HUNTER, Alan Joseph; DE SOARES SILVA E MELO MOTA, Mariana; VOLKER, Arno Willem Frederik |
| A well bore is inspected to detect cement defects that can give rise to leakage. The well bore comprises an inner metal pipe. Outside the inner metal pipe its configuration may vary with distance from the top of the well bore in terms of concentric pipes outside the inner metal pipe and presence of cement between the pipes. A probe with is lowered through the inner metal pipe. An ultrasound signal is transmitted from the probe into the inner metal pipe and responses to the transmitted signal are received at a series of ultrasound receivers at different axial positions. A selection of a spatial frequency of waves arriving along the axial direction at the ultrasound receivers and/or the apparent velocity of said waves is retrieved dependent on the configuration. The received responses are band pass filtered accordingly. By selecting the band pass filter dependent on the configuration it becomes possible to detect cement defects well outside the innermost pipe from parameters of the earliest arriving pulse from the filtered reflection signal. | ||||||
| 71 | DOWNHOLE EVALUATION WITH NEUTRON ACTIVATION MEASUREMENT | EP14890776.9 | 2014-04-28 | EP3100076A1 | 2016-12-07 | GUO, Weijun; DORFFER, Daniel Francois |
| Neutron activation measurement techniques may be used to evaluate various properties of a subterranean well structure. In an example implementation, a logging tool can be positioned within a wellbore, such that neutrons generated by a neutron source are directed towards well structure. In response to the neutrons, the well structure emits gamma rays. A portion of the gamma rays can be detected by a gamma detector. To enhance the well structure's response to neutron activation, the well structure can be constructed of materials that include one or more doping materials. The inclusion of these doping materials can increase the number of gamma rays that are emitted when neutrons are directed into the well structure, and these emitted gamma rays can be more easily identified based on their energy level. | ||||||
| 72 | Method of cementing a borehole with a swellable packer and an auto-sealing cement | EP08806627.9 | 2008-10-17 | EP2217790B1 | 2016-10-05 | KULAKOFSKY, David, S.; FAUL, Ronald, R.; HUNTER, William,; RAVI, Krishna, M.; BADALAMENTI, Anthony, M. |
| 73 | CEMENTING JOB EVALUATION SYSTEMS AND METHODS FOR USE WITH NOVEL CEMENT COMPOSITIONS INCLUDING RESIN CEMENT | EP13900581.3 | 2013-12-28 | EP3063568A1 | 2016-09-07 | FRISCH, Gary, J.; JONES, Paul, J.; FOIANINI, Ivo |
| Acoustic measurements are obtained and combined with some identification of regions that are expected or believed to be cemented. Based at least in part on this information, a processing unit derives an annular material classifier that can identify those measurements characteristic of the cemented regions (including regions cemented with a resin cement formulation), and that further applies the classifier to the measurements to generate a cement log that can be displayed to a user. Cross-plots of waveform amplitude, acoustic impedance, and the derivative of acoustic impedance, have revealed that resin cement, for example, has characteristic acoustic properties that form a small cluster within the range of expected measurements. For improved identification reliability, such clusters can be identified adaptively. | ||||||
| 74 | DETERMINING A QUANTITATIVE BOND USING SIGNAL ATTENUATION | EP15171994.5 | 2015-06-12 | EP2957716A3 | 2016-07-27 | Pistre, Vivian; Kinoshita, Toshihiro |
A technique facilitates determination of a quantitative bond between a pipe and adjacent materials, e.g. between a wellbore casing and adjacent cement. The quantitative bond is established via acoustic measurements related to signal attenuation. Additionally, the acoustic measurements may be conducted with a sonic tool during a wellbore operation, e.g. during a drilling operation. The methodology enables use of signal attenuation in a manner which facilitates determination of bond index coverage up to a high percentage, e.g. 100 percent.
|
||||||
| 75 | VALIDATION OF CASED-HOLE ACOUSTIC TOOLS | EP13897319.3 | 2013-11-12 | EP3044413A1 | 2016-07-20 | JIMENEZ, Walmy Cuello; PANG, Xueyu; JONES, Paul; EPSTEIN, Robert Eric; GORDON, Zachary Edward; MANDAL, Batakrishna; GILSTRAP, Tatiana |
| In some implementations, a method for validating an acoustic bond-log tool includes having a test fixture including a wellbore casing emulating tubing. An outer tubing emulates a well formation and forms a perimeter of an annulus surrounding the wellbore casing emulating tubing. The wellbore casing tubing is configured with a stepped outer surface emulating different wellbore casing sidewall thicknesses. A dividing structure is coupled in the axial direction to the outer surface of the wellbore casing emulating tubing and to the inner surface of the outer tubing to radially subdivide the annulus into a plurality of hermetically sealable sample sections. Each sample section contains a sample of a material having a known acoustic impedance. The acoustic bond-log tool is validated by comparing a bond-log tool measurement of the acoustic impedance of each sample in a particular sample section to the known acoustic impedance of the sample. | ||||||
| 76 | USING HIGHER ORDER HARMONICS TO DETERMINE ACOUSTIC IMPEDANCE OF MATERIAL BEHIND BOREHOLE CASINGS | EP12859886 | 2012-12-19 | EP2795368A4 | 2016-07-13 | FROELICH BENOIT; HAYMAN ANDREW J; LIANG KENNETH K |
| 77 | MODULAR SENSED ANNULAR WELL APPARATUS FOR CEMENT TESTING | EP13896401.0 | 2013-10-30 | EP3039239A1 | 2016-07-06 | RIBEIRO, Sergio S.; MARCHESINI, Flavio H. |
| In some implementations, a cement testing system includes an upper end module and a lower end module. Casing-emulating tubing couples to the upper end module and to the lower end module and emulates a wellbore casing. A plurality of intermediate well-wall-emulating modules is configured to couple end-to-end and to couple to the upper end module and the lower end module to form an annulus around the casing emulating tubing. Each of the plurality of intermediate well-wall emulating modules is configured to emulate one or more characteristics of a well wall. | ||||||
| 78 | PREDEFINING ELEMENTS OF A CEMENTED WELLBORE | EP13895389.8 | 2013-10-08 | EP3039230A1 | 2016-07-06 | WHALLEY, Andrew James; GOSLING, Peter; URDANETA, Gustavo Adolfo |
| Systems and methods for predefining elements of a cemented wellbore using a graphical user interface comprising various elements for cementing the wellbore and a schematic view of the wellbore and tubing string. | ||||||
| 79 | The use of lamb waves in cement bond logging | EP06003261.2 | 2006-02-17 | EP1698912B1 | 2016-07-06 | Bolshakov, Alexei; Dubinsky, Vladimir; Patterson, Douglas; Tang, Xiao Ming; Barolak, Joseph; Alers, George A; Alers, Ronald B. |
| 80 | TRACEABLE POLYMERIC ADDITIVES FOR USE IN SUBTERRANEAN FORMATIONS | EP13897776.4 | 2013-11-22 | EP3036301A1 | 2016-06-29 | GORDON, Christopher Lynn; RODDY, Craig Wayne; CHATTERJI, Jiten |
| Disclosed are traceable polymeric additives that comprise a tagging material and methods of using the traceable polymeric additives in subterranean applications, such as cementing. An embodiment discloses a method of well treatment comprising introducing a fluid comprising a traceable polymeric additive into a wellbore, wherein the traceable polymeric additive comprises a polymer and a tagging material. | ||||||
QQ群二维码
意见反馈
意见反馈