岩石物理分析

利用计算出的模量重建纵波曲线，

与实测曲线建立迭代

< br>格式修正岩石模量，实现横波速度等关键参数估计。在方法实现上利用了

Xu-W hite

模

型为初始模型。

流体因子是 识别储层流体的重要参数，

常规流体因子多是基于单相介质

理论 提出的，

而从双相介质岩石物理理论出发可以更好的研究孔隙流体对介质岩石弹性

性质的影响，

为敏感流体因子的构建提供更好的指导。

本文采用了

Gassmann

流体因子，

并分析了其敏感性。

关键词：等效介质模量，孔隙度，横波速度估算，

Xu-Whi te

模型，

Gassmann

流体

因子。

I

中国石油大学（华东）

Seismic

Rock

physics

Theory

and

the

Application

in

Reservor Discrimination

Abstract

The study of reservoir prediction is mainly to investigate the characteristics of reservoir

structure,lithologic

features

and

reservoir

parameters,aim

to

reduce

the

risk

of

exploration.

Reservoir

parameters

include

porosity,permeability,fluid

type,etc,But

seismic

data

only

reflects

on

seismic

traveltime,amplitude

information,and

elastic

parameters

which

can

be

obtained

throuth

seismic

c

rock

physics

builds

bridges

for

reservoir

parameters

elastic.S-wave velocity, an important geophysical parameter,plays an important role in

pre-stack seismic reservoir elastic parameter inversion and fluid detection witch developed in

recent years.

The seismic shear wave velocity estimation technique is based on the rock mass

calculation model established by the seismic rock physics, reconstructs the longitudinal wave

curve with the calculated modulus, establishes the iterative pattern with the measured curve

to

correct

the

rock

modulus,

and

obtain

the

key

parameters

such

as

the

shear

wave

Xu-White model was used as the initial model in the method implementation.

Fluid factor is an important parameter to identify reservoir fluid. Conventional fluid factors

are mostly based on the theory of single-phase medium. From the theory of biphasic medium

rock physics, it can be better to study the effect of pore fluid on the elastic properties of fluid

The construction of fluid factors provides better guidance. In this paper, the Gassmann fluid

factor is used and its sensitivity is analyzed.

Key

word:

Equivalent

medium

modulus,

porosity,

Shear

wave

velocity

estimation,

Xu-White model, Gassmann fluid factor

II

中国石油大学（华东）

目录

第一章

绪论

.. .................................................. .................................................. ................................. 4

1.1

岩石物理学及其发展方向

.

............................. .................................................. ............................... 4

1.2

国内外研究现状

...... .................................................. .................................................. .................... 4

第二章

基本理论模型分析

.

.............................................. .................................................. .................. 6

2.1

有效介质模量理论

........................ .................................................. ................................................. 6

2.2

波传播理论

........ .................................................. .................................................. .......................... 7

2.3

理论模型的比较及适用性分析

.

........................... .................................................. ......................... 9

第三章

速度影响因素分析

.

.............................................. .................................................. ................

1

0

3.1

岩性对速度的影响

.................... .................................................. .................................................. .

1

0

3 .2

孔隙对速度的影响

.................. .................................................. .................................................. ...

1

1

3.3

成岩作用对速度的影响

.............. .................................................. .................................................

1

1

3.4

密度对速度的影响

.................... .................................................. .................................................. .

1

1

3 .5

孔隙流体对速度影响

................. .................................................. ..................................................

1

2

3.6

压力对速度的影响

.................... .................................................. .................................................. .

1

2

3 .7

温度对速度的影响

.................. .................................................. .................................................. ...

1

3

第四章

主要应用

................................................ .................................................. ...............................

1

4

4.1

横波速度估算

....... .................................................. .................................................. .....................

1

4

4.2

流体替换

......... .................................................. .................................................. ...........................

1

6

4.3

敏感属性参数优选

.................... .................................................. .................................................. .

1

6

第五章

实际资料的应用（基于孔隙弹性理论的地震岩石物理研究）

.

......

错误！未定义书签。

5.1

东营组储层地震岩石物理模型构建

.

....................................... ....................

错误！未定义书签。

5.2

基于岩石物理地震横波速度估计技术

.

...................................... .................

错误！未定义书签。

5.2.1

横波速度估计理论

... .................................................. ............................

错误！未定义书签。

5.2.2

实例计算

....... .................................................. ........................................

错误！未定义书签。

5.3