Valves and Seats

Valves & Seats

STOTAI provides superior fluid end expendables and service solutions to exceed our customers’expectation in performance and lower total costs of fracturing.

STOTAI field-proven valves and seats are designed for maximum performance and stability under 10k to 16k psi treating pressure.

Features

Superior alloy steel and forging forming for valves body and valves seats, upgraded polyurethane for valve inset;

Compatible with common frac chemicals, abrasion and chemical resistance;

Available in 4” and 4.5” sizes, custom size after customer are satisfied with testing results of samples.

Valves and Seats Comparative Case Study

Timeline:	1 Month
Frac Field:	Sichuan Basin Shale Southwest China
Proppant Mesh Size:	40/70
Sand Volume per frac pump:	65,000 to 80,000 lb/stage
Frac Pump:	HH6000 quintuplex frac pump
Operating Pressure:	12,000-13,000 psi
Average Valves Life:	Other Leading brand:: 20 stages (40 hours); STOTAI: 23 stages (46 hours)
Average Seats Life:	Other Leading brand:: 40 stages (80 hours); STOTAI: 42 stages (84 hours)

Field Pictures:

STOTAI Valves Other Leading Brand Valves

Valves Insert Comparative Case Study

Brief Introduction

One of our customers wanted to optimize the maintenance and costs of its frac pump valves insert.

STOTAI proposed a field trial with our valves insert which produced substantial results.

Testing conditions

Timeline: 2 Months

Material of Valves Insert: Polyurethane

Working Medium: Fracturing fluid, mud, sand, etc.

Temperature Grade: Normal temperature

Working Pressure: 65-110 Mpa

Frac Pump: HH6000 frac pump with 4” valves insert

Frac Field and testing results

Field testing results 1

Pressure	75-85 MPa
Fluid Volume	Total 2100m3, sand 288 m3
Working Life	Other leading brand: 15 Stages (30 hours); STOTAI: 15 Stages (30 hours)

Field testing results 2

Pressure	95-110Mpa
Fluid Volume	Total 2200m3, sand 320m3
Working Life	Other leading brand: 8 Stages (16 hours); STOTAI: 9 Stages (18 hours)

Field testing results 3

Pressure	65-70Mpa
Fluid Volume	Total 2350m3, sand 310m3
Working Life	Other leading brand: 25 Stages (50 hours); STOTAI: 28 Stages (56 hours)

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Timeline:

1 Month

Frac Field:

Sichuan Basin Shale Southwest China

Proppant Mesh Size:

40/70

Sand Volume per frac pump:

65,000 to 80,000 lb/stage

Frac Pump:

HH6000 quintuplex frac pump

Operating Pressure:

12,000-13,000 psi

Average Valves Life:

Other Leading brand:: 20 stages (40 hours); STOTAI: 23 stages (46 hours)

Average Seats Life:

Other Leading brand:: 40 stages (80 hours); STOTAI: 42 stages (84 hours)

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