High precision structural interpretation in complex small fault‐block zone: A case of Qintong Depression

2009 ◽  
Author(s):  
Guoliang Qi ◽  
Wenhui Yu ◽  
Xueqiang Zhang
Keyword(s):  
High Precision ◽  
Structural Interpretation ◽  
Fault Block ◽  
Small Fault

scholarly journals Study of early dynamic evaluation methods in complex small fault-block reservoirs

2012 ◽  
Vol 14 ◽  
pp. 689-694 ◽  
Author(s):  
Wu Yahong ◽  
Weng Xingfang ◽  
Xu Mengya ◽  
Guo Shengtao
Keyword(s):  
Evaluation Methods ◽  
Dynamic Evaluation ◽  
Fault Block ◽  
Small Fault

Fault Sealing Property Analyzing by Water Injection in Oilfields

2013 ◽  
Vol 295-298 ◽  
pp. 3205-3208 ◽  
Author(s):  
Peng Fei Shen ◽  
Ling Li ◽  
Yong Sheng Chen ◽  
Nian Qiao Fang ◽  
Jian Li ◽  
...  
Keyword(s):  
Water Injection ◽  
Injection Well ◽  
Injection Wells ◽  
Availability Analysis ◽  
Fault Block ◽  
Sealing Ability ◽  
Small Fault ◽  
General Method

The quantity and availability of water injection are affected by geological environments in complex small fault-block oilfields, especially nearby faults. It is a general method to qualitatively determine fault sealing ability by water injection availability. The availability analysis of several injection wells can judge sealing ability of five faults of block M28-1 in JD oilfield. The water injection data show that fault F1, F4, F5 are main areas of pressure releasing for unsealing. Fault F2 and F3 are distributed on each side of the water injection well, which have a little influence on loss of water injection for sealing.

Structural interpretation from horizontal seismic sections

Geophysics ◽  
1983 ◽  
Vol 48 (9) ◽  
pp. 1179-1194 ◽  
Author(s):  
Alistair R. Brown
Keyword(s):  
Structural Features ◽  
Relative Movement ◽  
Structural Interpretation ◽  
Seismic Waveform ◽  
Fault Block ◽  
Data Volume ◽  
Structural Surface ◽  
Vertical Sections ◽  
Seismic Sections ◽  
Dual Polarity

The interpreter of a 3-D survey must utilize a data volume. Horizontal slices through a data volume, called Seiscrop™ sections, have unique properties and structural interpretation from them is fast, convenient, and effective. An event on a Seiscrop section displays local strike, a property which permits direct contouring of a structural surface without any timing and posting. The width of an event on a Seiscrop section is a composition of the frequency of the data and the structural dip. Event terminations indicate faults or other discontinuities when they are transverse to structural strike. Faults parallel to structural strike are much less evident on a single Seiscrop section but become apparent with the relative movement of events from section to section. In practical mapping, the interpreter normally contours one fault block before proceeding to the next with the correlation between them being established from the vertical sections. With dual polarity variable area displays, the interpreter can perceive five amplitude levels and normally picks the edge of a trough. With color amplitude Seiscrop sections, it is possible to pick on the crest of any event. With color phase sections, the interpreter can pick at any arbitrary but consistent point on the seismic waveform. The horizontal perspective often permits the interpreter to recognize subtle structural features which might have gone unnoticed if studying the prospect from vertical sections alone.

A Study on Development Adjustment Technique in the Block Bei301

2012 ◽  
Vol 170-173 ◽  
pp. 1348-1352
Author(s):  
Fan Shun Kong
Keyword(s):  
Horizontal Well ◽  
Fault Identification ◽  
Layer System ◽  
Fault Block ◽  
Complex Fault ◽  
Well Pattern ◽  
Small Fault ◽  
Sedimentary Microfacies ◽  
Reservoir Description ◽  
Oilfield Development

In view of the broken fault, rapid sediment, high heterogeneity，high structural dip and rapid reservoir change in Block Bei301, fine reservoir description research was implemented including small fault identification, fan delta sedimentary microfacies subdivision and facies-constrained modeling, and the problems existing in production were analyzed zone by zone and interval by interval. Moreover, other unique adjustment strategies were implemented including reservoir engineering and numerical simulation researches, well pattern thickening, injection-production system adjustment, separated layer system adjustment, as well as horizontal well technology. Finally, oilfield development effect was improved and a series of unique adjustment technologies for complex fault block reservoir were preliminarily formed, which provides reference for the development adjustment in similar oilfields

Automatic measurement of SAED patterns from asbestos minerals

1988 ◽  
Vol 46 ◽  
pp. 846-847
Author(s):  
J. C. Russ ◽  
T. Taguchi ◽  
P. M. Peters ◽  
E. Chatfield ◽  
J. C. Russ ◽  
...  
Keyword(s):  
Diffraction Pattern ◽  
High Precision ◽  
Diffraction Data ◽  
Automatic Measurement ◽  
Automatic Method ◽  
Important Method ◽  
X Ray ◽  
Integrated Intensity ◽  
Asbestiform Minerals ◽  
True Center

Conventional SAD patterns as obtained in the TEM present difficulties for identification of materials such as asbestiform minerals, although diffraction data is considered to be an important method for making this purpose. The preferred orientation of the fibers and the spotty patterns that are obtained do not readily lend themselves to measurement of the integrated intensity values for each d-spacing, and even the d-spacings may be hard to determine precisely because the true center location for the broken rings requires estimation. We have implemented an automatic method for diffraction pattern measurement to overcome these problems. It automatically locates the center of patterns with high precision, measures the radius of each ring of spots in the pattern, and integrates the density of spots in that ring. The resulting spectrum of intensity vs. radius is then used just as a conventional X-ray diffractometer scan would be, to locate peaks and produce a list of d,I values suitable for search/match comparison to known or expected phases.

On effects of non-systematic reflections on weak-beam images of partial dislocations

1991 ◽  
Vol 49 ◽  
pp. 688-689
Author(s):  
K. Z. Botros ◽  
S. S. Sheinin
Keyword(s):  
High Precision ◽  
Stacking Fault ◽  
Important Application ◽  
Stacking Fault Energy ◽  
Sharp Peak ◽  
Weak Beam ◽  
Partial Dislocations ◽  
Deviation Parameter ◽  
Beam Diffraction

The main features of weak beam images of dislocations were first described by Cockayne et al. using calculations of intensity profiles based on the kinematical and two beam dynamical theories. The feature of weak beam images which is of particular interest in this investigation is that intensity profiles exhibit a sharp peak located at a position very close to the position of the dislocation in the crystal. This property of weak beam images of dislocations has an important application in the determination of stacking fault energy of crystals. This can easily be done since the separation of the partial dislocations bounding a stacking fault ribbon can be measured with high precision, assuming of course that the weak beam relationship between the positions of the image and the dislocation is valid. In order to carry out measurements such as these in practice the specimen must be tilted to "good" weak beam diffraction conditions, which implies utilizing high values of the deviation parameter Sg.

Digital differential hysteresis iimage processing displays what the microscope acquires but the eye can't see

1995 ◽  
Vol 53 ◽  
pp. 642-643
Author(s):  
Klaus-Ruediger Peters
Keyword(s):  
Image Processing ◽  
Visual System ◽  
High Precision ◽  
Image Data ◽  
Processing Technology ◽  
Output Data ◽  
Contrast Resolution ◽  
Pixel Intensity ◽  
Data Reading ◽  
Hysteresis Properties

Differential hysteresis processing is a new image processing technology that provides a tool for the display of image data information at any level of differential contrast resolution. This includes the maximum contrast resolution of the acquisition system which may be 1,000-times higher than that of the visual system (16 bit versus 6 bit). All microscopes acquire high precision contrasts at a level of <0.01-25% of the acquisition range in 16-bit - 8-bit data, but these contrasts are mostly invisible or only partially visible even in conventionally enhanced images. The processing principle of the differential hysteresis tool is based on hysteresis properties of intensity variations within an image.Differential hysteresis image processing moves a cursor of selected intensity range (hysteresis range) along lines through the image data reading each successive pixel intensity. The midpoint of the cursor provides the output data. If the intensity value of the following pixel falls outside of the actual cursor endpoint values, then the cursor follows the data either with its top or with its bottom, but if the pixels' intensity value falls within the cursor range, then the cursor maintains its intensity value.

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