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DBT14-2018 English PDF

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US$689.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
DBT14-2018: Specification of hydraulic fracturing and overcoring method for in-situ stress measurement
Status: Valid

DBT14: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
DB/T 14-2018	689	Add to Cart	6 days	Specification of hydraulic fracturing and overcoring method for in-situ stress measurement	Valid
DB/T 14-2000	999	Add to Cart	5 days	Code of hydraulic fracturing and overcoring method for in-situ stress measurement	Obsolete

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Basic data

Standard ID: DB/T 14-2018 (DB/T14-2018)
Description (Translated English): Specification of hydraulic fracturing and overcoring method for in-situ stress measurement
Sector / Industry: Chinese Industry Standard (Recommended)
Classification of Chinese Standard: P15
Word Count Estimation: 30,360
Date of Issue: 2018-06-25
Date of Implementation: 2019-01-01
Older Standard (superseded by this standard): DB/T 14-2000
Regulation (derived from): China Earthquake Administration website (2018.07.02)
Issuing agency(ies): China Earthquake Administration

DBT14-2018: Specification of hydraulic fracturing and overcoring method for in-situ stress measurement

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification of hydraulic fracturing and overcoring method for in-situ stress measurement ICS 91.120.25 P15 Record number. 64440-2018 People's Republic of China Earthquake Industry Standard Replace DB/T 14-2000 In-situ stress measurement Hydraulic fracturing method and sleeve core release method specifications 2018-06-25 released 2019-01-01 Implementation Issued by China Earthquake Administration

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 4 Basic requirements 4 5 Two-dimensional stress measurement by hydraulic fracturing method 4 6 Three-dimensional stress measurement of hydraulic fracturing method 7 7 Set of core removal method 9 8 Recommended content of measurement report 11 Appendix A (Normative Appendix) Two-dimensional stress measurement and calculation method for hydraulic fracturing 14 Appendix B (Normative Appendix) Three-dimensional in-situ stress measurement and calculation method of hydraulic fracturing by porous intersection method 17 Appendix C (Normative Appendix) Single-hole hydraulic fracturing three-dimensional in-situ stress measurement and calculation method 20 Appendix D (Normative appendix) Core-relief method for ground stress calculation method 22 Reference 27

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces DB/T 14-2000 "In-situ stress measurement hydraulic fracturing method and core release method technical specifications", and DB/T 14- Compared with.2000, the main technical changes are as follows. ---Added the three-dimensional stress measurement method of the hydraulic fracturing method, including the porous intersection method and the single-hole fracture re-tension method; ---Added two-dimensional and three-dimensional stress calculation methods for hydraulic fracturing. This standard was proposed by the China Earthquake Administration. This standard is under the jurisdiction of the National Seismic Standardization Technical Committee (SAC/TC225). This standard was drafted. Institute of Crustal Stress, China Earthquake Administration. The main drafters of this standard. Guo Qiliang, Yang Shuxin, Ding Lifeng, Wang Chenghu, Li Bing, Zhang Yanshan, Wang Jianxin, Bao Linhai, Zhou Longshou, Zhang Ce, Xu Junshan and Hu Xiuhong. This standard was first published in November.2000, and this is the first revision. In-situ stress measurement Hydraulic fracturing method and sleeve core release method specifications

1 Scope

This standard specifies the technical methods and requirements for in-situ stress measurement using hydraulic fracturing method and sleeve core release method. This standard is applicable to field point measurement to obtain in-situ stress data in underground engineering, and the two-dimensional measurement of hydraulic fracturing method is used to obtain the borehole axis horizontal The magnitude and direction of the plane stress on the section; the three-dimensional measurement of hydraulic fracturing and the core release method are used to obtain the magnitude and direction of the three-dimensional principal stress.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 50266 Engineering Rock Mass Test Method Standard DL/T 5331 Drilling hole pressure test specification for hydropower and water conservancy projects 3 Terms, definitions and symbols 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 In-situ stress The stress that exists in the crust without being disturbed by human activities. 3.1.2 Hydraulic fracturing The process of injecting pressure into the packing section to rupture the hole wall of the packing section. 3.1.3 Initial burst pressure The hydraulic pressure that makes the hole wall of the packing section produce tensile fracture, that is, the critical breaking pressure that the hole wall can withstand. 3.1.4 Instantaneous closing pressure After the packing section is stretched and the injection pressure is stopped, the fracturing circuit is kept closed, the fracture joint stops extending, and the opening of the fracture surface gradually decreases and tends to close. At the moment of closing, the fluid pressure of the packer is in balance with the normal stress on the fracture surface of the rock formation. 3.1.5 Rupture reopening pressure Pressure is injected into the packer again to reopen the liquid pressure in the packer at the moment the rupture is reopened. 3.1.6 Pore water pressure The pressure of water in the pores of a rock mass. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of DBT14-2018_English be delivered?

Answer: Upon your order, we will start to translate DBT14-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of DBT14-2018_English with my colleagues?

Answer: Yes. The purchased PDF of DBT14-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version DBT14-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version DBT14-2018 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.