Study on Identification of Low-Order Faults and Structure Modeling of Small Fault Block Reservoirs

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.

Download Full-text

Ordovician Fauna in a Small Fault Block on the Yarrol Fault, South of Calliope, Central Queensland

Proceedings of the Royal Society of Queensland ◽

10.53060/prsq.2021.4 ◽

2021 ◽

Vol 129 ◽

Author(s):

Peter A. Jell ◽

Ian G. Percival ◽

Alex G. Cook

Keyword(s):

Fault Block ◽

Small Fault

Download Full-text

A Study on Development Adjustment Technique in the Block Bei301

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.170-173.1348 ◽

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

Download Full-text

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

Beijing 2009 International Geophysical Conference and Exposition, Beijing, China, 24–27 April 2009 ◽

10.1190/1.3603677 ◽

2009 ◽

Author(s):

Guoliang Qi ◽

Wenhui Yu ◽

Xueqiang Zhang

Keyword(s):

High Precision ◽

Structural Interpretation ◽

Fault Block ◽

Small Fault

Download Full-text

the effects of resonance with Jupiter in the system of short-period comets

International Astronomical Union Colloquium ◽

10.1017/s0252921100033959 ◽

1974 ◽

Vol 22 ◽

pp. 193-203

Author(s):

L̆ubor Kresák

Keyword(s):

Structural Effects ◽

Order Resonance ◽

Mean Motion ◽

Short Period ◽

The Mean ◽

Compound Effect ◽

Low Order

AbstractStructural effects of the resonance with the mean motion of Jupiter on the system of short-period comets are discussed. The distribution of mean motions, determined from sets of consecutive perihelion passages of all known periodic comets, reveals a number of gaps associated with low-order resonance; most pronounced are those corresponding to the simplest commensurabilities of 5/2, 2/1, 5/3, 3/2, 1/1 and 1/2. The formation of the gaps is explained by a compound effect of five possible types of behaviour of the comets set into an approximate resonance, ranging from quick passages through the gap to temporary librations avoiding closer approaches to Jupiter. In addition to the comets of almost asteroidal appearance, librating with small amplitudes around the lower resonance ratios (Marsden, 1970b), there is an interesting group of faint diffuse comets librating in characteristic periods of about 200 years, with large amplitudes of about±8% in μ and almost±180° in σ, around the 2/1 resonance gap. This transient type of motion appears to be nearly as frequent as a circulating motion with period of revolution of less than one half that of Jupiter. The temporary members of this group are characteristic not only by their appearance but also by rather peculiar discovery conditions.

Download Full-text