Evaluation of a downhole tiltmeter array for monitoring hydraulic fractures
نویسندگان
چکیده
منابع مشابه
Downhole microseismic monitoring of hydraulic fracturing: a full- waveform approach for complete moment tensor inversion and stress estimation
Downhole microseismics has gained in popularity in recent years as a way to characterize hydraulic fracturing sources and to estimate in-situ stress state. Conventional approaches only utilize part of the information contained in the microseismic waveforms such as the P/S amplitude ratio and/or P first motion polarity to determine the microearthquake focal mechanisms and infer stress state. Thu...
متن کاملWhite Paper: Tiltmeter-Based Bridge Scour Monitoring
Scour is by far the primary cause of bridge failures in the United States. Scour and other hydraulic effects are particularly threatening because the deterioration is often invisible , hidden beneath turbid water. Many scour monitoring methods attempt to measure the development of scour pockets themselves. However, this is difficult due to debris — both floating and submerged — and shifting str...
متن کاملMonitoring Hydraulic Fractures: State Estimation using an Extended Kalman Filter
There is considerable interest in using remote elastostatic deformations to identify the evolving geometry of underground fractures that are forced to propagate by the injection of a high pressure viscous fluid. These so-called hydraulic fractures are used to increase the permeability in oil and gas reservoirs as well as to pre-fracture ore-bodies in preparation for a mining process known as bl...
متن کاملModeling Ithaca’s natural hydraulic fractures
Joints within the Catskill Delta complex are believed to be natural hydraulic fractures and abundant indirect evidence supports this claim. The indirect evidence is based on many observations of joint surface morphology and joint spacing among other features. The Alleghanian orogeny left a unique imprint on the joint surfaces also, indicating a rotating horizontal compressive stress field. Nume...
متن کاملGravity Reduction View: A Radiographic Technique for the Evaluation and Management of Weber B Fibula Fractures
Background: While various radiographic parameters and application of manual/gravity stress have been proposed to elucidate instability for Weber B fibula fractures, the prognostic capability of these modalities remains unclear. Determination of anatomic positioning of the mortise is paramount. We propose a novel view, the Gravity Reduction View (GRV), which helps elucidate non-anatomic position...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Rock Mechanics and Mining Sciences
سال: 1997
ISSN: 1365-1609
DOI: 10.1016/s1365-1609(97)00074-9