Re-exploration programs for petroleum-rich sags in rift basins / Xianzheng Zhao [and four others].

Format:

Book

Author/Creator:

Zhao, Xianzheng, author.

Language:

English

Subjects (All):

Petroleum--Geology.

Petroleum.

Basins (Geology).

Rifts (Geology).

Physical Description:

1 online resource (644 pages) : color illustrations, portraits

Place of Publication:

Cambridge, MA : Gulf Professional Publishing, [2018]

Summary:

Re-exploration Programs for Petroleum-Rich Sags in Rift Basins covers the geological characteristics and potential of oil-rich depressions in a rifted basin. It describes up-to-date research and technology, detailing the current status of exploration. The overall aim of the book is to guide a new round of hydrocarbon exploration of petroleum-rich depressions, contributing to breakthroughs in re-exploration and a substantial increase in reserves. Chapters discuss the reservoir forming theory of oil-rich depressions, characters of hydrocarbon migration and accumulation in a weak structure slope, key elements of reservoir forming of deep buried hills and inner curtains, and more.Other topics covered include complex subtle reservoir recognition techniques, deep layer and buried hill high speed drill technology, recognition of buried hill reservoir and hydrocarbon, high efficiency enhanced oil recovery, and finally, methods of secondary exploration of oil-rich depressions and the development of a workflow to guide research and exploration.- Provides up-to date knowledge and expertise on the geological characteristics and potential of oil-rich depressions in a rifted basin- Based on a decade of experience, program deployment, and geological theory on continental basin exploration- Gives practical guidance for exploiting green and brown fields- Helps the reader understand how to increase reserves and production- Ideal as a guidebook for sustainable large-scale exploration and exploitation of a continental rifted basin

Contents:

Front Cover

Re-exploration Programs for Petroleum-Rich Sags in Rift Basins

Copyright

Contents

About the Authors

Petroleum Industry Press

Foreword 1

Foreword 2

Preface

Chapter 1: Connotation and Workflow of Re-exploration

1. Necessity of Re-exploration for Oil-Rich Sags

2. Connotation of Re-exploration for Oil-Rich Sags

2.1. Definition of Re-exploration

2.2. Connotation of Re-exploration

3. Workflow of Re-exploration

3.1. Constructing the Sag-Wide Merged 3D Seismic Data Platform

3.2. Reconstructing the Basic Geology of the Sag

3.2.1. Structural reconstruction

3.2.2. Sedimentary reconstruction

3.2.3. Reservoir reconstruction

3.3. Quantitatively Characterizing the Spatial Distribution of Oil and Gas Resources

3.4. Creating the New Model of Multiprospect Hydrocarbon Accumulation

3.5. Multiprospect Overall Preexploration

3.6. Integration of Reserve Addition and Productivity Construction

Chapter 2: Construction of Sag-Wide Merged 3D Seismic Data Platform

1. Sag-Wide Merged 3D Seismic Survey

1.1. Overall Deployment

1.1.1. Type I blocks

1.1.2. Type II blocks

1.1.3. Type III blocks

1.2. Second-Round 3D Seismic Data Acquisition

1.2.1. Optimization of acquisition parameters

1.2.2. Step-by-step implementation of second-round 3D seismic data acquisition

1.3. Complex Target-Specific Data Acquisition

1.4. Sag-Wide Merged 3D Seismic Data Processing

1.4.1. Raoyang Sag

1.4.2. Shenxian Sag

1.4.3. Langgu Sag

1.4.4. Baxian Sag

1.4.5. Merged processing in the Jizhong Depression

2. Urban/Mining Area 3D Seismic Survey

2.1. Special Survey Geometry in Large Barrier Zones

2.2. Comprehensive Survey of Near-Surface Barriers

2.3. Realization of Special Survey Geometry in Large Urban/Mining Areas.

2.3.1. Optimization of special survey geometry based on satellite photos

2.3.2. Well-shot and vibroseis combined shooting in urban/mining areas

2.4. Regularization Based on Irregular Folds

2.5. Effect of Urban/Mining Area 3D Seismic Survey

3. Multiphase 3D Seismic Fusion Survey

3.1. Principle

3.2. Multiphase 3D Fusion Geometry

3.2.1. Fold design based on raw data

3.2.2. Survey geometry design based on infilled sampling points

3.2.3. Survey geometry design based on spliced azimuths

3.3. Multiphase 3D Seismic Data Fusion Processing

3.3.1. Bin grid unification and homogenization

3.3.2. Integrated static correction based on time variant

3.4. Effect of Multiphase 3D Seismic Fusion Survey

4. Sag-Wide Merged 3D Seismic Data Processing

4.1. Workflow and Approach of Sag-Wide Merged 3D Seismic Data Processing

4.2. Establishment of Sag-Wide Near-Surface Structural Model

4.2.1. Low-velocity zone correction

4.2.2. Unified datum correction

4.3. Quantitative Wavelet Shaping and Prestack Data Regularization

4.4. Multidomain Multiinformation-Constrained Velocity Modeling

Chapter 3: Reconstruction of Sag-Wide Structural Framework

1. Structural Interpretation of Sag-Wide 3D Seismic Data Volume

1.1. ``Four-Step´´ Regional Seismic-Geology Stratigraphic Correlation

1.1.1. Select critical wells for fine horizon calibration

1.1.2. Combine well data and seismic data of main seismic lines to determine the stratigraphic correlation scheme

1.1.3. Compare well data and seismic data to unify the geologic zonation of a whole sag

1.1.4. Establish the drilling zonation database of the merged 3D survey

1.2. Structural Interpretation Through ``Stereoscopic Quick Network Construction, and Combination of Plane and Section´´.

1.2.1. SOF to improve the capacity of fault identification based on seismic data

1.2.2. Massively-merged time slices to quickly interpret first-order and second-order faults

1.2.3. Massively merged geometric seismic attributes to assist the interpretation of third-order and fourth-order faults

1.2.4. Automatic tracing of horizons with strong reflection and good continuity

1.2.5. Stereoscopic quick network construction by combining plane and section to set up interpretation framework

1.2.6. Geologic knowledge to guide the precise interpretation of complex structure zones

1.2.7. Seismic attribute fusion to make precise structural interpretation

2. Overall Structural Features

2.1. Structural Framework of ``Belts in an EW Direction and Regions in an SN Direction´´

2.1.1. Belts in an EW direction

Central uplift

Western sag belt

Eastern sag belt

2.1.2. Regions along SN direction

North region

Central region

South region

2.2. Features of Basement Faults

2.2.1. Fault properties

2.2.2. Fault orders

2.2.3. Fault assemblage styles

Fault assemblage styles in plane

Parallel fault assemblage

Net-like fault assemblage

Parallel-arc fault assemblage

Comb-like fault assemblage

Broom-like fault assemblage

Linear fault assemblage

Oblique fault assemblage

En echelon fault assemblage

Fault assemblage styles on sections

Step-shaped fault-block assemblage

Graben-horst assemblage

2.3. Structural Styles

2.3.1. Extensional structural style

Drape anticline structure on a buried hill

Anticline structure with subsided top of basement uplift

Roll-over anticline structure

Graben antiformal structure with stratigraphic compensation

Gravity-slip anticline

2.3.2. Strike-slip structural style

Negative flower structure.

En echelon structure

Broom-like structure

2.3.3. Compressional structural style

3. Features of Weak Structure Zones

3.1. Basic Features of Weak Structure Zones

3.2. Identification Indexes of Weak Structure Zones

3.2.1. Bottom curvature K (m-1)

3.2.2. Derivative of formation thickness variation rate Ah (km-1)

Formation thickness variation rate

Derivative of formation thickness variation rate

Areal density of faults

3.2.3. Areal density of fault throw M (km2)

3.3. Distribution of Weak Structure Zones

3.4. Evolution of Weak Structure Zones

3.4.1. Zoning of tectonic activity intensity in the Kongdian Formation-Sha 4 Member

3.4.2. Zoning of tectonic activity intensity in the Sha 3 Member-Sha 2 Member

3.4.3. Zoning of tectonic activity intensity in the Sha 1 Member-Dongying Formation

3.4.4. Zoning of tectonic activity intensity in the Neogene-Quaternary

3.4.5. Evolution patterns of weak structure zones

4. Structural Evolution Features

4.1. Thrusting in an SE Direction During the Yanshanian Orogeny

4.2. Extension in an SEE Direction During the Deposition of the Kongdian Formation-Sha 4 Member

4.3. Extension in an SE Direction During the Deposition of the Sha 3 Member-Sha 2 Member

4.4. Extension and Strike-slipping in an SSE Direction During the Deposition of Sha 1 Member-Dongying Formation

4.5. Sagging During the Neogene

Chapter 4: Reconstruction of Sag-Wide Depositional System

1. Establishment of Sequence Stratigraphic Framework

1.1. Identification of the Sequence Boundary

1.1.1. Identification of the first- and second-order sequence boundaries

1.1.2. Identification of the third-order SB

1.1.3. Identification of the boundary in sequence

FFS (First Flooding Surface)

Maximum Flooding Surface (MFS)

1.2. Establishment of Sequence Stratigraphic Framework.

1.2.1. Sequence division and correlation

Lower sequence

Middle sequence

Upper sequence

SQ1

SQ2

SQ3

SQ4

SQ5

SQ6

SQ7

SQ8

SQ9

SQ10

SQ11

SQ12

SQ13

1.2.2. Systems tract division

Division of lacustrine sequence systems tract (LSST)

LST

TST

HST

Division of fluvial sequence systems tract (FSST)

Base-level rising systems tract

Base-level falling systems tract

Division of parasequence and parasequence set

Prograde parasequence set (PPSS)

Retrogradational parasequence set (RPSS)

Aggradational parasequence set (APSS)

1.3. Characteristics and Controlling Factor of Sequence Stratigraphy

1.3.1. Characteristics of sequence stratigraphy

Vertical and horizontal sequence developments have obvious differences

Different types of subsags have multiple types of superimposition patterns

Superimposition pattern of inherited subsag sequence

Superimposition pattern of reverse subsag sequence

Superimposition pattern of early growth type subsag sequence

Superimposition pattern of offset type subsag sequence

Superimposition pattern of systems tract is different in different zones and different stages

Superimposition pattern of systems tract is different in different zones

a. Superimposition pattern of the systems tract in gentle slope belt

b. Superimposition pattern of the systems tract in steep slope belt

Superimposition pattern of systems tract is different at different stages

a. Superimposition pattern of rapid lake-forming systems tract

b. Superimposition pattern of slow lake-forming systems tract

1.3.2. Controlling factor of sequence stratigraphy

The stage of regional tectonic activities controls the development of second-order sequences

Difference of boundary fault activities controls the configuration of third-order sequences.

Sediment supply and climate change result in the complexity of local sequence configuration.

Notes:

Includes bibliographical references and index.

Description based on online resource; title from PDF title page (ebrary, viewed September 4, 2018).

ISBN:

9780128161548

012816154X