[특허]Fracture characterization using directional electromagnetic resistivity measurements

Fracture characterization using directional electromagnetic resistivity measurements 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-049/00 G01V-001/28 E21B-043/26 G01V-003/20 E21B-047/12 G01V-003/18
출원번호	US-0709314 (2015-05-11)
등록번호	US-9909414 (2018-03-06)
발명자 / 주소	Bittar, Michael S. Menezes, Clive D.
출원인 / 주소	Halliburton Energy Services, Inc.
대리인 / 주소	Bryson, Alan
인용정보	피인용 횟수 : 0 인용 특허 : 95

초록 ▼

A disclosed fracture characterization method includes: collecting three-dimensional resistivity measurements of a volume surrounding an open borehole; analyzing the measurements to determine parameters describing fractures in the volume; and providing a report to a user based at least in part on said parameters. A fluid with a contrasting resistivity is employed to make the fractures detectable by a directional electromagnetic logging tool in the borehole. Illustrative parameters include fracture direction, height, extent, length, and thickness. The resistivity measurements can be augmented using a borehole wall image logging tool. Also disclosed are fracturing methods that include: positioning a directional electromagnetic logging tool proximate to a formation; fracturing the formation; monitoring fracture progression with said tool; and halting the fracturing when measurements by said tool indicate that a predetermined set of criteria have been satisfied.

대표청구항 ▼

1. A fracturing characterization method comprising: positioning an electromagnetic resistivity tool in a borehole proximate to a formation; obtaining a borehole wall image log; obtaining three-dimensional (3D) formation resistivity measurements collected, as a function of different depths, azimuths, and radial distances from the borehole, by the tool; combining information from the borehole wall image log with the 3D resistivity measurements to determine at least one fracture parameter; and halting fracturing of the formation, by reducing the flow rate of fracturing fluid by a processor, when the at least one fracture parameter satisfies a set of criteria. 2. The method of claim 1, wherein the set of criteria includes a minimum length and a maximum extent. 3. The method of claim 1, wherein data for the borehole wall image log is acquired by an acoustic tool or a micro-resistivity tool. 4. The method of claim 1, further comprising creating a log comprising the at least one fracture parameter. 5. The method of claim 1, wherein the at least one fracture parameter comprises fracture direction. 6. The method of claim 1, wherein the at least one fracture parameter comprises fracture height. 7. The method of claim 1, wherein the at least one fracture parameter comprises fracture extent. 8. The method of claim 1, wherein the at least one fracture parameter comprises fracture length. 9. The method of claim 1, wherein the at least one fracture parameter comprises fracture thickness. 10. A logging assembly comprising: a borehole wall image logging tool comprising an array of borehole wall imaging pads to obtain borehole wall measurements as a function of position and orientation; an electromagnetic resistivity tool coupled to the borehole wall image logging tool, the electromagnetic resistivity tool comprising at least one tilted antenna to obtain three-dimensional (3D) resistivity measurements as a function of different depths, azimuths, and radial distances from the borehole; and a processor communicably coupled to the borehole wall image logging tool and the electromagnetic resistivity tool, the processor having software that, when executed, combines the 3D resistivity measurements and the borehole wall measurements to determine at least one fracture parameter and causes reduction of a flow rate of fracturing fluid when the at least one fracture parameter satisfies a set of criteria. 11. The logging assembly of claim 10, wherein the set of criteria includes a minimum length and a maximum extent. 12. The logging assembly of claim 10, wherein the borehole wall image logging tool an acoustic tool or a micro-resistivity tool. 13. The logging assembly of claim 10, wherein the software, when executed, creates a log comprising the at least one fracture parameter. 14. The logging assembly of claim 10, wherein the processor is conveyed downhole with the logging assembly. 15. The logging assembly of claim 10, wherein the processor is disposed within a data processing system at the Earth's surface. 16. The logging assembly of claim 10, wherein the at least one fracture parameter comprises fracture extent. 17. The logging assembly of claim 10, wherein the at least one fracture parameter comprises fracture direction. 18. The logging assembly of claim 10, wherein the at least one fracture parameter comprises fracture height.

이 특허에 인용된 특허 (95)

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Fracture characterization using directional electromagnetic resistivity measurements 원문보기

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Fracture characterization using directional electromagnetic resistivity measurements 원문보기

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