... ABSTRACT This paper describes the success story of the first water shut off treatment using Engineered Micro-cement Slurry (EMS) through Coiled Tubing in Pakistan. The well was an oil well producing from multiple zones, but mainly the lower zone (C-Sand). Due to high water cut, it was decided...

... is developing a novel material Complex micro-containers (CMC) to induce autonomous self-healing properties to the cement using the mechanism of a self-expanding polyurethane foam formation in a crack area. Complex micro-containers (CMC) consist of polyol-loaded polyurea (PUa) micro- and nanocapsules loaded...

... and the anti-gas channeling toughening agent of anti-channeling agent were optimized through experiment study. A novel micro-expansion anti-gas channel cement slurry system which is suitable for Agadem block was obtained through experiment optimization study: 100% G +2 ∼ 4% fluid loss agent +3 ∼ 4.5% anti...

...). The cyclic injection rate results high and low pressurization to trigger cement failure (i.e. micro-annulus) and casing failures in the wellbore. URTeC: 2583 The Effect of Pressure Cycling on the Development of Micro-Annulus in Cement Sheath Yuxing Wu, Harsh Patel, Saeed Salehi, Well Construction...

... on the surface of the formation and casing can prevent the cement from bonding with its surroundings, creating micro-annuli. These failures and more can happen creating pathways for formation fluids through the cement barrier. Commonly, cement squeeze remedial operation is performed to seal cement leakages...

...) and at the cement-casing and the cement-formation interfaces (debonding fractures). Micro-annuli (MA) are the systematic and inter-connected debonding fractures which is the most hazardous mode of cement failure and can cause serious wellbore leakage problems. This paper utilizes the extended finite element method...

... ABSTRACT: Micro-annuli existing on the interface of cement-sheath might lead to the failure of wellbore integrity. Based on the solutions of the elastic and elastic-plastic deformations of a thick-walled cylinder with the internal and external pressures; meanwhile combining...

... Abstract During oilwell cementing operations, many situations occur for which it is crucial to regulate the temperature of the cement slurry during and after its placement. Limiting the temperature increase of cement-based composite materials has been traditionally achieved by reducing the heat...

... on future conformance and waterflood performance was highlighted and a project was initiated to look into the full abandonment of the horizontal reservoir section. Planned Treatment Operations Abstract For the first time in a Danish field, micro-fine cement was used to abandon a multi-zone...

... ABSTRACT A new "radial" cement bond instrument, the Micro CBL, has been developed to measure the quality of cement to casing bond. The instrument is capable of measuring the quality of the cement bond both vertically and circumferentially. Four arrays of sectored transmitters and receivers...

... of +@ cementtO b( 5390 . .Thewel.l.wasthen cement squeezedat 5x6x9 6 daysprior tologgx with 500 sacksof . . . k .- L . ~.z T -,x1 , . ~, . . . ., . .. ~ .- ;Z..n-, -: -, ? t, . , . . . . . .- . Uf% OF THE MICRO-SE@OGRM4 AND T?~ ACOUSTIC C= 3 BOIIIDLOG TO EVALUATECEMENTINGTECHNIQUES SPE 798, . . . I...

... additives which can reduce the effect of the expansion-contraction mechanism during the cement slurry setting. These additives fill contraction induced voids within the cement structure and between the pipe and cement, which leads to an impermeable cement, thus eliminating the existence of micro-fractures...