..., undulating joint types. In this paper, in-situ shear tests, conducted at Sir Dam Site, K. Maraş, Turkey, together with small scale shear tests on cores recovered from the same location are explained. Three large-scale and several small scale shear tests are carried out. Blocks 70x70x35 em are cut in quartite...

... of a rigid polymer (MaraSEAL), which resulted in the desired solution 5 , 6 . The advancing water was checked and in addition access to reperforate on a deeper horizon was achieved. The well is back on production. perforation production enhancement production control downhole intervention...

.... Two options are available. The first one, known under the trademark of MARCIT TM , uses high-molecular-weight polyacrylamide and has been designed to treat fractured formations. The second one, known under the trademark of MARASEAL TM , uses low-molecular-weight polyacrylamide and aims at sealing...

... solutio Consequently, in 1997 Mamora 8 proposed an improv chemical wellbore plug system that would not require additional roundtrip to clean out the chemical plug. Propos improvements in the method were as follows. Holding pressures for MARASEAL and PERMSEA plugs were low (10-20 psi) for 1...

... to inject the gel, – completion integrity checked (no leak) and good cement bond in order ensure a good placement. Gel system selection For the treatment, we decided to use the Maraseal system which consists in: polymer: Polyacrylamide, 15% active matter in liquid form, molecular weight...

... in this paper have been carried out with formulations representative of the Marathon Marcit™ and Maraseal™ processes: High-molecular-weight polyacrylamide: 12000 ppm; chromium acetate: 960 ppm; brine: a synthetic sea water of high salinity with composition given in Table 1 (Marcit™), Low-molecular...

... formation to give complete shutoff of that zone or to reach shale barriers. They have an operational advantage over other treatments because they can be jetted rather than drilled out of the wellbore. Typically, based on cross-linked polymers, products like MaraSEAL and OrganoSEAL-R 2 systems can be easily...

... 6 other jobs in 1993 on fracture shut-off using polymer gels solutions, including Marcit/Maraseal™ water shut off campaign between 1996 – 98. In all these applications, only marginal success was noted in south Oman while North Oman carbonates are known for higher success rate but with inconsistent...

..., would then provide selective isolation for subsequent treatment of the target interval, typically with a gel water shut-off fluid such as Marcit or MaraSeal. The ultimate length of the ACP was determined by the limitations of existing mixing equipment that did not allow for volumes of slurry larger than...

... Object #2 to isolate it. Another strategy that has been implemented is to access Object #3 by deepening existing vertical well and perforating it. Currently 2 wells have been identified for gas shutoff with Maraseal and field trial planning is ongoing. Selective multistage stimulation campaign has also...

... are also highlighted. EXPERIMENTAL STUDIES Materials Polyacrylamide/Cr (Maraseal)m system: This (Ill) acetate gelling system 134 comprises a partially hydrolyzed polyacrylamide polymer, a cross-finker (chromium acetate) and a retarder (sodium lactate). Prior to fietd application, a service company supplied...