I. Product Overview
The isolation membrane anti-slump fluid loss reducer CMJ-2 for drilling fluid is a new product newly developed by China Petroleum Exploration and Development Research Institute. It is obtained by alkalization of natural fibers, high temperature pyrolysis, and polycondensation reaction with polyunsaturated organic amine compounds. A new class of organic amine natural fiber polymers. During the drilling process, this product can be adsorbed to the well wall to form one or more layers of molecular film with complete isolation effect, which can effectively prevent the drilling fluid and its filtrate from leaking into the formation, and has a strong plugging effect and high temperature fluid loss reduction effect. , can effectively seal micro-fractures, stabilize wellbore walls, and protect reservoirs.
This product has excellent lubricity, no or less lubricant can be added when drilling vertical wells or directional wells. The product is non-toxic, easy to degrade, and can be used in various water-based drilling fluids.
II. Product Features
1. An isolation film is formed on the well wall, which has a strong plugging effect and can effectively plug micro-fractures, stabilize the well wall and protect the reservoir.
2. Good lubricity, suitable for directional well or horizontal well application.
3. No fluorescence, no toxicity, easy to degrade, and it is an environmentally friendly treatment agent.
4. The temperature resistance can reach 180℃, and it is suitable for various drilling fluids.
III. Basic performance
|
Item |
Index |
|
Appearance |
Yellowish or brown granule or powder |
|
PH |
8.0~11.0 |
|
0.9 mm aperture sieve allowance, % |
≤10 |
|
Moisture, % |
≤12 |
|
HTPT Filtration(mL/30min) |
≤30 |
IV. How to use
It can be made into glue or directly added to the circulating mud, the recommended dosage is 1.0-2.0%.
V. Packaging and storage
The packaging bag is a paper-plastic three-in-one composite packaging bag (that is, kraft paper, polypropylene woven bag, and polyethylene are combined into a whole), lined with plastic bags, each bag is 25kg, and the top mouth is glued with tape after the top mouth is stitched. Knot. Storage and transportation should be handled as non-toxic and non-flammable products. During storage and transportation, it is necessary to prevent moisture, heat and package damage.
