Mudstone Microstructure Evolution During Burial and Diagenesis and Effect on Caprock Sealing Capacity

Mudstone microstructure is poorly understood even though it has a profound impact upon permeability. Mudstone permeability is critical in defining the rate at which oil and gas leak through oil and gas field caprocks, and the effectiveness of aquicludes utilised in protecting clean confined groundwater supplies and isolating wastes. During burial, mudstone permeability is controlled initially by the depositional fabric and mineralogy and then by mechanical compaction. A secondary stage of (chemical) compaction and permeability evolution will occur during progressive burial when diagenetic reactions, such as smectite-to-illite and clay-carbonate reactions, occur as a result of the faster reaction rates at higher temperatures and the overstepping of thermodynamic reaction boundaries. This research is intended to address the links between microstructure and mineralogy of mudstones, permeability, pore size distribution and their bulk sealing capacity. These data will be placed in the context of the geological history in terms of depth, temperature, pressure and effective stress histories.

Date (Creation): 2001-12-01

Citation identifier: http://data.bgs.ac.uk/id/dataHolding/13605407

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University of Liverpool	Worden, Professor R	not available	Principal investigator
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Point of contact

Maintenance and update frequency: notApplicable

GEMET - INSPIRE themes, version 1.0

Geology

BGS Thesaurus of Geosciences

NGDC Deposited Data
Fluid dynamics
Hydrocarbons
Groundwater
Fluid mechanics
Fluid flow

dataCentre

NGDC Deposited Data

Keywords

NERC_DDC

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Use constraints: Other restrictions

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Other constraints: Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section ( ipr@bgs.ac.uk) for advice, should the position not be clear.

Language: English

Topic category

Geoscientific information

Supplemental Information: NER/T/S/2001/00682 (M2m)

Reference System Information

No information provided.

Distribution format

Name	Version

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey	Enquiries	enquiries@bgs.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://www.bgs.ac.uk/	BGS Homepage

Hierarchy level: Non geographic dataset

Other: non geographic dataset

Conformance result

Title: INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication): 2011

Explanation: See the referenced specification

Pass: No

Conformance result

Title: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services