FIELD: oil and gas industry.
SUBSTANCE: in order to determine acoustic characteristics of clay cake in the well, response to low-frequency non-fluctuating pressure signal is recorded at least by means of one acoustic sensor. The received signal contributes to determination at least of one characteristic of transient pressure variation process, thickness of clay cake, and at least on of the following values is determined based on the obtained values: piezoconductivity of clay cake and fluid mobility.
EFFECT: development of simple and effective method applied for determination of characteristics of clay cake in the well, which allows determining clay cake characteristics using the pressure source generating a non-fluctuating signal.
19 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO DETERMINE ACOUSTIC CHARACTERISTICS OF CLAYEY CRUST | 2011 |
|
RU2473805C1 |
| SYSTEM, METHOD AND BOREHOLE INSTRUMENT OT ESTIMATE BENCH PERMEABILITY | 2007 |
|
RU2419819C2 |
| ELECTROMAGNETIC PROBE | 2006 |
|
RU2438150C2 |
| METHOD TO DETERMINE THICKNESS OF CLAYEY CRUST | 2010 |
|
RU2466273C2 |
| METHODS AND APPARATUS FOR MEASURING STREAMING POTENTIALS AND DETERMINING UNDERGROUND FORMATION CHARACTERISTICS | 2009 |
|
RU2478991C2 |
| DETERMINATION OF FLUID PARAMETERS AS PER ACOUSTIC LOGGING DATA | 2008 |
|
RU2477369C2 |
| MEASUREMENT METHODS AND DEVICES FOR FILTRATION POTENTIALS AND DETERMINATION OF CHARACTERISTICS OF UNDERGROUND FORMATION | 2005 |
|
RU2402048C2 |
| APPARATUS FOR MEASURING FILTRATION POTENTIAL AND DETERMINING UNDERGROUND FORMATION CHARACTERISTICS | 2008 |
|
RU2453873C2 |
| METHOD FOR PROPERTIES DETERMINATION OF CARBOHYDRATE FORMATION AND FLUIDS PRODUCED IN EXTRACTION PROCESS | 2012 |
|
RU2505675C1 |
| METHOD OF DETERMINING PROPERTIES OF PERMEABLE FORMATION | 2012 |
|
RU2492510C1 |
