Zero Fluid Loss Wellbore Stabilizer JYW-1/JYW-2

I. Product IntroductionJYW series products are non-permeable drilling fluid additives produced by our factory to replace FLC2000 and LCP2000 produced by American Petroleum Corporation, and their performance indicators have reached or exceeded similar foreign products.Non-permeable drilling fluid can effectively prevent formation hydration and expansion, seal formation bedding fissures, prevent lost circulation, improve pressure-sensitive formation pressure bearing capacity, prevent well wall collapse, prevent the migration of clay particles in the formation, and protect oil and gas layers.JYW-1 is composed of natural polymers, partially water-soluble and fully water-soluble synthetic organic polymers and insoluble metal oxides. It has high thermal stability, can simplify solid control equipment, and can resist salt pollution. Replaces many fluid loss control additives in oil-based muds.JYW-2 is a non-bridging material plugging mud product made of several mixed polymers, flakes, fibers and granular materials, which can prevent mud from penetrating into the lost zone. Shear thickening plugging, after entering the leakage zone to a sufficient depth, the rheological frictional resistance is greater than the formation pressure, and stops moving forward, which is a non-permanent plugging, so it can be used in production layers.

 

II. Performance indicators (Table 1, Table 2, Table 3)

 

Table 1 Physical and chemical indicators

Item	JYW-1	JYW-2
Appearance	yellow free flowing powder	yellow free flowing powder
Moisture,% ≤	8	8
Sieve residue ,%(80 mesh sieve)≤	15	25
pH	5.5-6.5	5.5-6.5

 

Table 2 Medium pressure API fluid loss and medium pressure sand bed fluid loss of drilling fluid

Item	AV (mPa·s)	YP (Pa)	APIFL (ml)	(20-40 mesh) sand bed fluid loss (ml) or entry depth(cm)
Base slurry1	31	14	≤15	lost all
Base slurry11＋1%JYW-1	31	14	≤12	≤3.0(cm)
Base slurry1 1＋1%JYW-2	31	14	≤12	≤3.5(cm)
Base slurry1 2	26	10	≤3.5	lost all
Base slurry12＋1%JYW-1	19	8	≤3.0	≤3.0(cm)
Base slurry1 2＋1%JYW-2	26	10	≤3.5	≤4.0(cm)

 

Note: base slurry 1: 1% soil + 0.5% FA367 + 0.8% NPAN + 0.3% XY-27 + 1% FT-1 + 0.3% CSW-1 + 5% BaSO4

Base slurry 2: Polymer drilling fluid with a well depth of 1100 meters in Dagang Oilfield and a density of 1.15g/cm3

 

Table 3 High temperature and high pressure filtration loss and high temperature and high pressure sand bed filtration loss

 

Item	AV(mPa·s)	YP(Pa)	HTHP (ml)150℃	(20-30 mesh)sand bed HTHP(ml)150℃
Base slurry 1	20	9	26	lost all
Base slurry 1＋1%JYW-1	≤23	≤10	≤18	116
Base slurry 1＋1%JYW-2	≤24	≤11	≤24	lost all
Base slurry2	26	10	26	lost all
Base slurry 2＋1%JYW-1	≤26	≤10	≤18	≤3.5
Base slurry 2＋2%JYW-2	≤17	≤7	≤9	0

 

Note: Base slurry 1: 1% soil + 0.5% FA367 + 0.8% NPAN + 0.3% XY-27 + 1% FT-1 + 0.3% CSW-1 + 5% BaSO4

Base slurry 2: Polymer drilling fluid with a well depth of 1100 meters in Dagang Oilfield and a density of 1.15g/cm3.

 

III. How to use

It can be made into glue or directly added to the circulating mud, the recommended dosage: 0.5-1.0% for JYW-1 type. JYW-2 type is 0.8-1.5%.