SY/T 5241-1991 Evaluation Procedure for Fluid Loss Reducers for Water-Based Drilling FluidsSY/T5241-1991 Standard Download Decompression Password: www.bzxz.net

Petroleum and Natural Gas Industry Standard of the People's Republic of China SY / T 5241-91
Evaluation Procedure for Fluid Loss Reducers for Water-Based Drilling Fluids 1991-07-19 Issued
Ministry of Energy of the People's Republic of China
Implementation on 1991-11-01
1 Subject Content and Scope of Application
Petroleum and Natural Gas Industry Standard of the People's Republic of China Evaluation Procedure for Fluid Loss Reducers for Water-Based Drilling Fluids SY /T 5241-91
This procedure specifies the configuration method of suspended particles for evaluating fluid loss reducers for water-based drilling fluids and the evaluation procedure and calcium pollution test under six filterability conditions, namely 24+3℃, 70℃, 120℃, 150℃, 180℃, and 200℃ in fresh water, 4% brine, and saturated brine. This procedure is applicable to the evaluation of the fluid loss capacity of fluid loss reducers such as waste methyl cellulose, starch, and humic acid. 2 Main equipment and materials
2,1 Equipment
a. For room temperature filter loss meter, see 4.2.1 of ZB/TE13004 drilling fluid test procedure; b. For high temperature and high pressure filter loss meter, see 4.3.1 of 7B/TE13004 drilling fluid test procedure; c. For direct reading viscometer, see 3.2.2.1 of ZB/TEI3004 drilling fluid test procedure; d. Roller heating furnace: 701-40 type or similar products; e. High-speed stirring ticket: 11000t300r/min under load: with a single corrugated impeller with a diameter of 2.5cm, its weight is about 5.5g;
f. Stopwatch: sensitivity 0.1s;
g. Balance: to meet the weighing error of less than 0.5%; h. Cylinder: 500, 100, 50, 25, 10ml; i. Glass thermometer: 0～100℃; j. Thermometer: metal range 0～200℃, 2 pieces. 2.2 Materials a. Evaluation soil: OCMA evaluation: 1. Or similar products: h. Refined salt: c. Sodium bicarbonate: chemically pure d. Calcium chloride: chemically pure e. Distilled water.
3 Fresh water test
3.1 Room temperature medium pressure test
3.1.1 Temperature curing test
3.1.1.1 Prepare 5 suspensions: Add 1.0g sodium bicarbonate and 35.0g sodium bicarbonate to a high-stirring beaker containing 350ml of distilled water, stir for 5ml with a high-speed stirrer, put the container in a container, remove the sodium bicarbonate adhering to the container wall, and continue stirring for 15min (the cumulative stirring time is 20min).
3.1.1.2 Determine the filtration loss of one of the suspensions according to ZB/TE130044.2.2, which should be 45±10ml. Approved by the Ministry of Energy of the People's Republic of China on July 19, 1991, and implemented on November 1, 1991
SY/T 5241 91
3.1.1.3 Add different amounts of fluid loss additives to the remaining 4 suspensions so that their fluid loss distribution is within the range of 5-10 ml. Stir with a high-speed stirrer for 20 minutes, breaking the blade twice during the process to scrape off the fluid loss additive adhering to the container wall. 3.1.1.4 Curing each suspension in a sealed container at room temperature for 16 hours, and determining the apparent viscosity and fluid loss rate according to ZBT130043.2.2.2 and 4.2.2 respectively.
3.1.1.5 Draw a graph on rectangular coordinate paper 1 showing the relationship between the filtration loss and apparent viscosity of the Sansi float and the concentration of the filtration reducer. Draw two smooth curves to determine the amount of filtration reducer added when the filtration loss is 10.0 ml (accurate to 0.1 g/cm3) and its corresponding apparent viscosity (accurate to 0.5 mPz s).
3.1.270℃ hot rolling test
3.1.2.1 Prepare 4 suspensions according to the steps in 3.1.1.1. 3.1.2.2 Add the same amount of filtration reducer to the 4 suspensions so that their filtration losses after hot rolling are distributed in the range of 5 to 15 ml. Stir with a high-speed stirrer for 20 minutes. During the stirring, stop twice to scrape off the filtration reducer adhering to the container wall. 3.1.2.3 Transfer the 4 suspensions to high-temperature tanks respectively and hot roll at 70℃ for 16 hours. 3.1.2.4 Take the high temperature tank and cool it to room temperature. Determine the apparent viscosity and the maximum filtration loss according to ZB/TF13004 3.2.2.2 and 3.2.2.
3.1.2.5 Draw a graph according to 3.1.1.5 to determine the amount of filtration reducer added and its corresponding apparent viscosity when the filtration loss is 10.0ml. 3.1.3 Hot rolling test above 120℃
Perform the test according to the steps in 3.1.2, except that the hot rolling temperature is set to 120℃, 150℃, 180℃, and 200℃ according to actual needs. Before hot rolling, fill the high temperature tank with 690kPa nitrogen. 3.2 High temperature and high pressure test
3.2.1 120℃ test
3.2.1.1 Prepare the suspension according to the steps in 3.1.1.1. 3.2.1.2 Add different amounts of fluid loss reducers to the four suspensions so that their high-temperature and high-pressure fluid loss amounts are distributed in the range of 30-50 ml, and stir with a high-speed stirrer for 20 minutes, and stop twice to scrape off the fluid loss reducer adhering to the container wall. 3.2.1.3 Transfer the four suspensions to high-temperature containers respectively, and heat-roll at 120°C for 16 hours. 3.2.1.4 Take out the high-temperature container, cool to room temperature, and measure the apparent viscosity and fluid loss at 120°C/3450 kPa according to 3.2.2.2 and 4.3.2.1.
3.2.1.5 Draw a graph according to 3.1.1.5 to determine the filtration loss (accurate to 0.1g/1) and its corresponding apparent viscosity (accurate to 0.5mPas) when the filtration volume is 40.1ml
3.2.2150℃ test
Perform the test according to the steps in 3.2.1, except that the test temperature is set to 150℃. Fill the high-temperature tank with 690kPa of nitrogen before hot rolling. 44% brine and saturated brine test
4.1 Prepare 4% brine and saturated brine with refined salt and distilled water, respectively. 4.2 Perform the test according to the steps in Chapter 3, except that the test liquid is changed to 4% brine and saturated brine, respectively. The room temperature medium pressure filtration loss of the base slurry should be 90±10ml for 4% brine and 100=10ml for saturated brine. 4.3 After adding different fluid loss reducers, the room temperature fluid loss composition of the suspension is distributed in the range of 5-15 ml. For the high temperature and high pressure test, the filtration volume of the 4% brine total suspension and the saturated brine suspension should be 40-60 ml and 50-70 ml respectively. 4.4 According to 3.1.1.5, draw a graph to determine the amount of fluid loss reducer added (accurate to 0.1 g/1) and its corresponding apparent viscosity (accurate to 0.5 mPa-s) when the filtration volume is 10.0 ml at room temperature and pressure, 50.0 ml in 4% brine at high temperature and pressure, and 60.0 ml in saturated brine at high temperature and high pressure. bzxz.net
5 Calcium pollution test
This test can be carried out according to actual requirements. The test steps are as described in Chapter 3, except that calcium chloride is added before room temperature curing or hot rolling. High agitation for 5 minutes. Calcium ion concentration is divided into 200, 700.1000, 3000mg/1, which can be selected according to needs. Fluid loss agent evaluation report
6.1 Fluid loss agent test report see Appendix A (Supplement) 6.2 Calcium pollution test in fresh water slurry see Appendix B (Supplement) Test number:
Sampling person:
Test phase II:
Test conditions
Room temperature
High temperature and high pressure
Air temperature and pressure
High temperature reaches
High temperature and high pressure
Commissioning unit:
Report number:
Testing unit:
Draw a graph to compare the required
filtration loss, ml
Testing person:
SY / T 524191
Appendix A
Filtrate reducer test report
(supplement)
Sampling time:
Sample collection period:
Curating conditions
Air temperature curing for 16h
Cold temperature curing
Air temperature curing furnace
120℃
150℃
180℃
120℃
150℃
150℃
150℃
180℃
City nuclear power plant:
Test results
Apparent viscosity, mPa·s
Calcium ion concentration, mg!
Test results
Test conditions
Air temperature curing
200)℃
120℃
Additional instructions:
Apparent viscosity
mPa·s
SY/T 524191
Appendix B
Calcium contamination test in fresh water slurry
(Supplement)
This standard is proposed by China National Petroleum Corporation. Apparent viscosity
mPa: s
Apparent viscosity
ml'a's
This standard was drafted by the Drilling Institute of Petroleum Exploration and Development Research Institute of China National Petroleum Corporation. The main drafter of this standard is Zhang Jianmin. Du Delin. Oxygenated Apparent Viscosity This standard remained valid after the review in 199, and the review result has been approved by the State Administration of Petroleum and Chemical Industry.
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