Efficiency of Surface Monitoring Layouts for Retrieving Accurate Moment Tensors in Hydraulic Fracturing Experiments
نویسندگان
چکیده
Abstract We study the sensor layouts of surface monitoring systems for injection areas in hydraulic fracturing experiments, which maximize accuracy retrieved moment tensors. The tensors (MTs) are determined using noisy synthetic P-wave amplitudes microearthquakes with varying mechanisms. An optimum layout is searched by minimizing a difference between true and inverted MTs. First, we tested efficiency circular networks. focused on one-circle two-circle various sizes numbers sensors each circle their centre epicentral region. results show that optimal events distributed within area characterized by: (1) one fixed area; (2) about 1/10 total number gathered near centre; (3) rest evenly surrounding take-off angle 135°. In homogeneous media, this corresponds to radius comparable depth microearthquakes. Second, compared other layouts: regular-grid, star-shaped uniform focal-sphere layouts. Taking 25 81 as examples, always best, means can achieve more accurate MTs than layouts, if experiment fixed. This contradicts common opinion networks, cover target area, work equally well irrespective layout.
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 کاملEnergy Analysis of Hydraulic Fracturing
In this paper, numerical simulations of circular boreholes under internal hydraulic pressure are carried out to investigate the energy transferred to the surrounding rock and the breakdown pressure. The simulations are conducted by using a micromechanical continuum damage model proposed by Golshani et al. (2006). The simulation results suggest that the borehole breakdown pressure and the energy...
متن کاملDifferentiating Applications of Hydraulic Fracturing
Hydraulic fracturing has received abundant media attention in recent years due to a rapid increase in the use of the technique in combination with horizontal drilling technology to produce oil and gas resources from tight reservoirs. Hydraulic fracturing techniques are also used in a variety of other applications that are unrelated to oil and gas production, includ‐ ing tunnel and dam construct...
متن کاملThe effect of sufficient barrier layers on hydraulic fracturing design efficiency in one of the Iranian South hydrocarbon reservoirs
Hydraulic fracturing and matrix stimulation are two major methods of the reservoir stimulation. Hydraulic fracturing, which is the newest technique and technically more complex, is very useful in low permeability reservoirs. Although it has been used widely in hydrocarbon production wells, it is a new method in Iran. In this paper, the effect of sufficient barrier layers on hydraulic fracturing...
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: Pure and Applied Geophysics
سال: 2022
ISSN: ['1420-9136', '2385-2097', '0033-4553', '0033-4533', '0367-4355']
DOI: https://doi.org/10.1007/s00024-022-03122-9