{"id":4842,"date":"2026-10-24T10:00:16","date_gmt":"2026-10-24T02:00:16","guid":{"rendered":"https:\/\/jxhg.net\/?p=4842"},"modified":"2026-10-24T10:00:16","modified_gmt":"2026-10-24T02:00:16","slug":"drilling-fluid-chemicals-fluid-loss-control-additives","status":"publish","type":"post","link":"https:\/\/jxhg.net\/ru\/blog\/drilling-fluid-chemicals-fluid-loss-control-additives\/","title":{"rendered":"Drilling Fluid Chemicals \u2014 Fluid Loss Control Additives"},"content":{"rendered":"
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\u0425\u0438\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0440\u0435\u0430\u0433\u0435\u043d\u0442\u044b \u0434\u043b\u044f \u0431\u0443\u0440\u043e\u0432\u044b\u0445 \u0440\u0430\u0441\u0442\u0432\u043e\u0440\u043e\u0432 \u043d\u0430 \u0432\u043e\u0434\u043d\u043e\u0439 \u043e\u0441\u043d\u043e\u0432\u0435<\/p>\n

Drilling Fluid Chemicals \u2014 Fluid Loss Control Additives<\/h2>\n

PHPA, polymer fluid-loss reducers, polyanionic cellulose and modified starch for filtration control, filter-cake quality and wellbore protection.<\/p>\n<\/div>\n

Fluid-loss control additives<\/strong> are an important part of water-based drilling-fluid systems. Their main purpose is to reduce the amount of liquid phase that invades permeable formations, while helping build a thinner and lower-permeability filter cake.<\/p>\n

Good filtration control can support wellbore stability, reduce formation damage, lower the risk of differential sticking and help maintain more predictable drilling-fluid performance. However, different products work through different mechanisms, and not every polymer should be treated as a direct substitute for another.<\/p>\n

Puyang Jinxiang Chemical supplies several water-based drilling-fluid products that can contribute to filtration management, including \u0427\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u0433\u0438\u0434\u0440\u043e\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043f\u043e\u043b\u0438\u0430\u043a\u0440\u0438\u043b\u0430\u043c\u0438\u0434 (PHPA)<\/a>, Polymer Fluid-Loss Reducer<\/a>, \u041f\u043e\u043b\u0438\u0430\u043d\u0438\u043e\u043d\u043d\u0430\u044f \u0446\u0435\u043b\u043b\u044e\u043b\u043e\u0437\u0430 (PAC)<\/a> and \u041c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u0440\u0430\u0445\u043c\u0430\u043b<\/a>.<\/p>\n

Why Fluid-Loss Control Matters<\/h2>\n

When filtrate enters a permeable formation, it can weaken sensitive formations, alter near-wellbore conditions and increase the thickness or permeability of the filter cake. In shale-rich intervals, uncontrolled filtrate invasion can contribute to hydration and instability. In permeable formations, it may increase differential sticking risk and reduce drilling efficiency.<\/p>\n

The objective is therefore not simply to reduce a laboratory fluid-loss number. A practical fluid-loss-control program should also support acceptable rheology, solids control, filter-cake quality, temperature stability and compatibility with the rest of the mud system.<\/p>\n

1. Partially Hydrolyzed Polyacrylamide (PHPA)<\/h2>\n

\u0427\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u0433\u0438\u0434\u0440\u043e\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043f\u043e\u043b\u0438\u0430\u043a\u0440\u0438\u043b\u0430\u043c\u0438\u0434 (PHPA)<\/a> is primarily known as a shale inhibitor and cuttings-encapsulation polymer in water-based drilling fluids. It adsorbs onto clay-rich surfaces and drilled solids, helping reduce dispersion and maintain cuttings integrity.<\/p>\n

PHPA can also provide auxiliary support to filtration behavior<\/strong> by interacting with fine solids and influencing filter-cake structure. However, it should not normally be considered the main fluid-loss reducer when strict API or HTHP filtration targets must be achieved.<\/p>\n

In an inhibitive WBM system, PHPA is often combined with dedicated filtration-control additives. This allows the mud program to address shale stability and fluid loss at the same time without forcing one product to perform every function.<\/p>\n

When PHPA is especially useful<\/h3>\n

PHPA is particularly valuable when the drilling challenge includes reactive shale, weak cuttings, excessive dispersion or rising low-gravity solids. In these cases, better encapsulation can indirectly help keep the mud system cleaner and more stable.<\/p>\n

2. Polymer Fluid-Loss Reducer<\/h2>\n

Polymer Fluid-Loss Reducer<\/a> is designed specifically to improve filtration control in drilling fluids. Depending on the formulation, polymeric fluid-loss additives can help bridge fine pores, modify the filter cake and reduce the permeability of the deposited solids layer.<\/p>\n

Compared with PHPA, this category is more directly focused on reducing filtrate. It is therefore a more suitable choice when the main technical objective is filtration control rather than shale encapsulation.<\/p>\n

The correct polymer fluid-loss reducer should be selected according to mud salinity, temperature, solids content and compatibility with other polymers. In higher-temperature or higher-salinity systems, testing after hot rolling is especially important.<\/p>\n

3. Polyanionic Cellulose (PAC)<\/h2>\n

\u041f\u043e\u043b\u0438\u0430\u043d\u0438\u043e\u043d\u043d\u0430\u044f \u0446\u0435\u043b\u043b\u044e\u043b\u043e\u0437\u0430 (PAC)<\/a> is one of the most widely used cellulose-based drilling-fluid additives for filtration control and rheology adjustment.<\/p>\n

PAC is commonly available in lower-viscosity and higher-viscosity grades. PAC-LV is generally selected when fluid-loss reduction is required with limited viscosity increase, while higher-viscosity grades can provide both filtration control and more rheological contribution.<\/p>\n

PAC works by improving water retention and contributing to a tighter filter cake. It is commonly used in freshwater, brine and selected inhibitive water-based systems, subject to formulation and test conditions.<\/p>\n

Why PAC-LV is often chosen<\/h3>\n

PAC-LV is useful when the mud already has sufficient viscosity but filtration must be reduced. Because the viscosity contribution is lower than high-viscosity cellulose grades, it can give the formulator more control over overall rheology.<\/p>\n

4. Modified Starch<\/h2>\n

\u041c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u0440\u0430\u0445\u043c\u0430\u043b<\/a> is a cost-effective fluid-loss-control additive commonly used in water-based mud systems. It helps reduce filtration by improving filter-cake quality and limiting water loss into permeable formations.<\/p>\n

Modified starch is often used where moderate-temperature filtration control is required and can work well together with PAC, CMC or polymeric filtration-control products.<\/p>\n

Its main advantage is that it can provide useful filtration control without excessively increasing viscosity when the formulation is properly balanced.<\/p>\n

How These Four Products Differ<\/h2>\n
\n\n\n\n\n\n\n\n\n
\u041f\u0440\u043e\u0434\u0443\u043a\u0442<\/th>\nPrimary Function<\/th>\nFluid-Loss Role<\/th>\nTypical Use<\/th>\n<\/tr>\n<\/thead>\n
\u0427\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u0433\u0438\u0434\u0440\u043e\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043f\u043e\u043b\u0438\u0430\u043a\u0440\u0438\u043b\u0430\u043c\u0438\u0434 (PHPA)<\/td>\nShale inhibition and cuttings encapsulation<\/td>\nAuxiliary support<\/td>\nInhibitive WBM, reactive shale<\/td>\n<\/tr>\n
Polymer Fluid-Loss Reducer<\/td>\nDedicated filtration control<\/td>\nPrimary<\/td>\nSystems requiring stronger filtration reduction<\/td>\n<\/tr>\n
PAC<\/td>\nFiltration control and rheology support<\/td>\nPrimary<\/td>\nFreshwater and brine WBM<\/td>\n<\/tr>\n
\u041c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u0440\u0430\u0445\u043c\u0430\u043b<\/td>\nCost-effective filtration control<\/td>\nPrimary \/ complementary<\/td>\nModerate-temperature WBM systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

How to Build a Practical Fluid-Loss Package<\/h2>\n

In many drilling-fluid systems, the best result comes from combining additives rather than relying on a single product. For example, PHPA may provide shale inhibition, PAC-LV may reduce filtration with limited viscosity increase, modified starch may improve the filter cake economically, and a polymer fluid-loss reducer may provide additional performance where tighter filtration targets are required.<\/p>\n

The correct balance should be determined through laboratory testing because too much polymer can increase viscosity, create poor mixing behavior or raise treatment cost.<\/p>\n

Temperature and Salinity Considerations<\/h2>\n

Temperature and salinity are two of the most important factors in fluid-loss-additive selection. Some starch-based or cellulose-based products may lose efficiency as temperature increases, while specially designed polymers can offer better performance under more demanding conditions.<\/p>\n

Similarly, dissolved salts can change polymer hydration and adsorption. A product that performs well in freshwater may behave differently in brine. Testing should therefore use water chemistry close to the actual field system.<\/p>\n

What Should Be Tested in the Laboratory?<\/h2>\n

A useful test program may include API filtration, HTHP filtration where applicable, rheology before and after hot rolling, filter-cake appearance, compatibility with salts and other polymers, and changes in viscosity after treatment.<\/p>\n

If shale instability is also a concern, PHPA performance should be evaluated with shale recovery or dispersion testing in addition to filtration measurements.<\/p>\n

What Information Should Be Included in an RFQ?<\/h2>\n

For a more accurate recommendation, buyers should provide the mud type, maximum operating temperature, salinity, mud density, current rheology, API or HTHP fluid-loss result, existing additives, target fluid-loss value, required product quantity, packaging and destination port.<\/p>\n

If the purpose is to replace an existing additive, supplying its TDS or COA can make product comparison more efficient.<\/p>\n

\u0427\u0430\u0441\u0442\u043e \u0437\u0430\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0435 \u0432\u043e\u043f\u0440\u043e\u0441\u044b<\/h2>\n

Is PHPA a fluid-loss reducer?<\/h3>\n

PHPA can provide auxiliary support to filtration behavior, but its primary role is shale inhibition and cuttings encapsulation.<\/p>\n

Which product is more directly used for fluid-loss control?<\/h3>\n

Polymer fluid-loss reducers, PAC and modified starch are more directly targeted at filtration control.<\/p>\n

What is the difference between PAC-LV and PAC-HV?<\/h3>\n

PAC-LV is generally selected when filtration control is needed with less viscosity increase, while higher-viscosity grades contribute more strongly to rheology.<\/p>\n

Can modified starch be used with PAC?<\/h3>\n

Yes. They are often used together, subject to laboratory compatibility and performance testing.<\/p>\n

Should high-temperature mud use the same fluid-loss additive?<\/h3>\n

Not necessarily. Temperature can change polymer performance, so the product should be selected and tested at representative conditions.<\/p>\n

Can one additive control both shale instability and fluid loss?<\/h3>\n

Some products contribute to more than one function, but a balanced mud system usually uses different additives for inhibition, filtration and rheology.<\/p>\n

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Need Drilling Fluid Fluid-Loss Control Additives?<\/h2>\n

Send your mud system, temperature, salinity, current filtration data, target performance, required quantity and destination port for product information and quotation.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

A practical guide to drilling fluid chemicals for fluid-loss control, including PHPA, polymer fluid-loss reducers, polyanionic cellulose (PAC) and modified starch for water-based drilling systems.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_title":"Drilling Fluid Chemicals \u2014 Fluid Loss Control Additives","_yoast_wpseo_metadesc":"Drilling fluid chemicals for fluid-loss control: PHPA, polymer fluid-loss reducers, polyanionic cellulose (PAC) and modified starch for water-based mud systems.","_yoast_wpseo_focuskw":"drilling fluid chemicals, fluid loss control additives, PHPA, polymer fluid loss reducer, polyanionic cellulose PAC, modified starch drilling fluid","rank_math_title":"Drilling Fluid Chemicals \u2014 Fluid Loss Control Additives","rank_math_description":"Drilling fluid chemicals for fluid-loss control: PHPA, polymer fluid-loss reducers, polyanionic cellulose (PAC) and modified starch for water-based mud systems.","rank_math_focus_keyword":"drilling fluid chemicals, fluid loss control additives, PHPA, polymer fluid loss reducer, polyanionic cellulose PAC, modified starch drilling fluid","_aioseop_title":"","_aioseop_description":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-4842","post","type-post","status-publish","format-standard","hentry","category-oil-drilling-fluid-news"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/posts\/4842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/comments?post=4842"}],"version-history":[{"count":1,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/posts\/4842\/revisions"}],"predecessor-version":[{"id":4843,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/posts\/4842\/revisions\/4843"}],"wp:attachment":[{"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/media?parent=4842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/categories?post=4842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jxhg.net\/ru\/wp-json\/wp\/v2\/tags?post=4842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}