Sandrock oil field all-rock mineral simulated rock core production method

A production method and a technology for simulating rock cores, which are applied in the preparation of test samples, measuring devices, instruments, etc., can solve problems such as the inability to obtain natural rock cores, the inability to obtain natural rock cores, and the inability to guarantee pertinence and effectiveness. Intact, easy to operate, simple production method

Inactive Publication Date: 2008-02-13
DAQING OILFIELD CO LTD
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For any block, as long as there is fluid entering from drilling to taking measures, it is necessary to conduct a compatibility test between the fluid entering the well and the natural core, and the natural core is a non-renewable resource. At present, the natural core of some layers or even blocks is no longer available.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1. The average permeability of the grape flower layer of the basic well pattern in the old area of ​​Daqing Oilfield is 500×10 -3 μm 2 , the average porosity is 28%, the median particle size is 0.123mm, and the content of quartz sand in the prepared core is 40% (grain size-3 μm 2 , The crushing pressure in the bare state is 4.5MPa.

Embodiment 2

[0009] Example 2. The average permeability of the Saar layer of the secondary and tertiary infill well patterns in the old Daqing Oilfield area is 100×10 -3 μm 2 , the average porosity is 24%, the median particle size is 0.115mm, and the quartz sand content in the prepared core is 40% (7% for particle size-3 μm 2 , The crushing pressure in the bare state is 5.5MPa.

Embodiment 3

[0010] Example 3, the average permeability of the Fuyu oil layer in the periphery of Daqing Oilfield is 10×10 -3 μm 2 , the average porosity is 18%, the median particle size is 0.120mm, and the quartz sand content in the prepared core is 52% (grain size -3 μm 2 , the crushing pressure in the bare state is 6.5MPa.

[0011] The dosage for making cores is determined according to the length of the required cores. The dosage range for 2.5cm-long cores is (25-30) g / block; the dosage range for 5.0cm-long cores is (50-55) g / block; The dosage range of core is (80-85)g / block.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Average permeabilityaaaaaaaaaa
Average permeabilityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a manufacturing method of a sandstone oilfield whole rock mineral simulated core. The manufacturing method is as follows. Firstly, required mineral raw materials are weighted quantitatively according to the component content, the size composition and the physical parameters of the sandstone oilfield blocks, and the is evenly mixed and sieved. Then, prepared cementing agent and the well mixed mineral raw materials are proportionally prepared, and are fully well mixed and sieved. Under the conditions of 6MPa-22MPa manufacturing pressure and 5min-10min manufacturing time, the solid-liquid mixture after sieving is made into simulated core through a fixing die forming method. The simulated core is dried under the temperature-changing with time-fixing conditions. The drying temperature with consumed time is from 40 degrees Celsius with 8 hours, 80 degrees Celsius with 16 hours, 120 degrees Celsius with 8 hours, 160 degrees Celsius with 16 hours to 200 degrees Celsius with 8 hours. The method is simple, safe and easy to be operated. The manufactured simulated core is equipped with not only the pore throat characteristics and seepage properties of a natural core, but also the sensitive properties of the natural core.

Description

Technical field: [0001] The invention relates to a method for making rock cores in the fields of oilfield geology and chemistry, in particular to a method for making rock cores for sandstone oilfield whole-rock mineral simulations. Background technique: [0002] Daqing Oilfield is a multi-reservoir sandstone oilfield, and the geological conditions of the blocks are different. With the deepening of oilfield development, the number of injection wells and production wells has been increasing; the number of new drilling and measure wells has also been increasing. For any block, as long as there is fluid entering from drilling to taking measures, it is necessary to conduct a compatibility test between the fluid entering the well and the natural core, and the natural core is a non-renewable resource. At present, the natural core of some layers or even blocks is no longer available. ; In addition, in some extended blocks, no exploratory wells have been drilled, and natural cores ca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N1/28G01N33/00
Inventor 徐洪波赵北红
Owner DAQING OILFIELD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap