EP 0656987 A1 19950614 - IMPROVED ADDITIVE COMPOSITION FOR OIL WELL CEMENTING FORMULATIONS.

Title (en)

IMPROVED ADDITIVE COMPOSITION FOR OIL WELL CEMENTING FORMULATIONS.

Title (de)

VERBESSERTE ADDITIVZUSAMMENSETZUNG FÜR ÖLBOHRLOCHZEMENTSCHLÄMME.

Title (fr)

AMELIORATIONS APPORTEES AUX COMPOSITIONS ADDITIVES POUR LES FORMULATIONS D'OBTURATION DE PUITS DE PETROLE.

Publication

EP 0656987 A1 19950614 (EN)

Application

EP 93919225 A 19930831

Priority

EP 9302348 W 19930831
US 94042992 A 19920904
US 94043092 A 19920904
US 94055392 A 19920904
US 94058192 A 19920904
US 94060892 A 19920904

Abstract (en)

[origin: WO9405896A1] An oil and gas well cementing composition has styrene/butadiene latex and a combination of nonionic and anionic surfactants for improved physical properties, especially fluid loss.

IPC 1-7

E21B 33/13; C04B 28/02; C04B 24/26

IPC 8 full level

C04B 24/26 (2006.01); C04B 24/32 (2006.01); C04B 28/02 (2006.01); C09K 8/46 (2006.01); C09K 8/487 (2006.01)

CPC (source: EP)

C04B 24/2664 (2013.01); C04B 24/32 (2013.01); C04B 28/02 (2013.01); C09K 8/46 (2013.01); C09K 8/487 (2013.01); C04B 2103/46 (2013.01)

Citation (search report)

See references of WO 9405896A1

Designated contracting state (EPC)

BE CH DE DK FR GB LI

DOCDB simple family (publication)

WO 9405896 A1 19940317; EP 0656987 A1 19950614

DOCDB simple family (application)

EP 9302348 W 19930831; EP 93919225 A 19930831