生物碎屑

塔中地区生物碎屑灰岩储层分析与评价

Analysis and Evaluation of Bioclastic Limestone Reservoir in the Central Region of Tarim Basin

自下而上的地层序列是火山岩系-火山碎屑灰岩-生物碎屑灰岩；

Special stratigraphic sequence ( from bottom upwards ): volcanic rocks , pyroclastic limestone and bioclastic limestone ;

其显著特征是，岩石具残余生物碎屑结构，见大量腕足类、海百合茎、珊瑚等钙质生物假象，主要为mm级完整个体，密集堆积。

The prominent characteristic of the siliceous rock is the residual bioclastic structure , with plenty of silicified calcareous organisms , such as brachiopoda , encrinite caudex and coral , which are several millimeters in size .

良好的储层包括与不整合相关的古喀斯特、TST和HST的碳酸盐岩隆、生物碎屑滩和LST的浊积岩、LST底部和HST顶？

Favorable reservoirs are paleo karst related to regional unconformity , carbonate buildup and bioclastic limestone in TST and HST , turbidite in LST and dolostone or grainstone in lower LST and higher HST .

矿石类型主要为凝灰质生物碎屑灰岩等，金品位高。

Tuffaceous-bioclastic limestone is the main type of ore-bearing rock .

东沙群岛以东海区钙质生物碎屑沉积丰富；

In the east sea area of Dongsha Islands , calcareous debris are enriched ;

外礁坪消耗大量波能，广泛覆盖生物碎屑，珊瑚生长稀疏。

The inner coral reef flat is wide and plane , and corals grow well .

黄铁矿集合体形态取决于形成时期沉积物颗粒间空隙大小及生物碎屑类型。

Pyrite formation depends on bioclastics type and the collection period gap between sediment particle sizes .

托索湖&花石峡礁带的主体由块状的礁相灰岩和生物碎屑灰岩所组成；

The reef island belt from Tusuo Lake to Huashixia is mainly composed of massive reef limestone and bioclastic limestone .

因本区生物碎屑白云岩的溶蚀孔隙很发育，其渗透率较高，岩石密度较小，声波速度较小，自然伽马较低。

They are high permeability , light in density , slow acoustic speed and lower γ, because there is a higher porosity in the biocarbonate rock .

在论证中采用了生物碎屑定量统计、灰岩酸不溶残渣分析、模拟水槽试验等方法。

In the course of demonstration , the methods such as quantitative statistics of different bioclasts , the acid-unsolvable residue analysis of limestones and the simulated experiments in the water flute were used .

在局部环境中主要受蒸发作用、潮汐作用和波浪作用控制，形成了一套以潮上蒸发坪白云岩和开阔台地的生物碎屑滩夹滩间泥微晶灰岩为特征的岩相组合。

Minor environment is mainly affected by evaporation and tidal , leading a lithofacies combination of evaporation flat in subtidal and bioclast bank in open platform with little micrite within it . 3 .

半深海深海沉积中生物碎屑的组成和含量往往成为确定沉积类型的重要因素。东北地区早白垩世沉积类型兼论侏罗自垩系界线

The composition and content of bioclasts are important factors for the classification of different sediments in the bathyal-abyssal areas . ON THE LOWER CRETACEOUS SEDIMENTATION TYPE AND THE CONTINENTAL JURASSIC-CRETACEOUS BOUNDARY IN NORTHEAST CHINA

分析结果表明，南黄海陆架沉积物颜色反射率受控于沉积物中的铁氧化物、有机质以及粘土矿物和钙质生物碎屑含量。

It is shown from the analysis results that the color reflectance of sediments from the southern Yellow Sea shelf area is controlled by the ferric oxide , organic matter , clay mineral and calcareous biogenic detritus contents in sediments .

本文研究表明，大中旺地区油气主要分布在沙一段下部的生物碎屑灰岩和云质灰岩段（特殊岩性段），储层溶蚀孔隙发育；

Several points can be concluded for the area from this paper study : ( 1 ) Hydrocarbon mainly occurs in the lower interval of bioclastic limestone and dolomitic limestone ( the special lithologic interval ) in Es_1 Member , in which solution pores well developed ;

碱提取法分析海洋沉积物生物硅方法中碎屑组分污染的评估及校正

Evaluation and calibration on the detrital contamination to biogenic opal of marine sediments by alkali leachate methods

碳酸盐岩是以碳酸钙为主要成分的化学沉积岩，少数以生物骨骼或其碎屑沉积为主。

Carbonate is calcium carbonate as the main ingredient of chemical sedimentary rocks , some of which is consisted of biological skeletal or clastic deposition .

生物灰岩由富含生物碎屑、化石富集的层段组成，具有较高的孔渗性，其储集孔隙以溶蚀孔隙、生物体腔孔及骨架孔隙为主；

The biolithite made up of stratums with biology fragment and fossils have admirable pervasion ability , in which dissolved pore , organism pore and framework pore play important roles in preserving oil and gas .